tag:blogger.com,1999:blog-197202162024-03-13T12:03:22.834+02:00Svilen Spasov's Corner (Dev, Diving, Audio)Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.comBlogger68125tag:blogger.com,1999:blog-19720216.post-12115898588981912682013-08-05T11:19:00.002+03:002013-08-05T11:21:45.364+03:00Изчистване на log-а (гмурканията) на ползван Suunto компютър<div dir="ltr" style="text-align: left;" trbidi="on">
Преди няколко месеца си взех ползван Suunto D6 и ме дразнеше, че има записани дайвове в лога си.<br />
След като се поразрових открих начин как да се изчисти паметта на компютъра, тъй като от сервиза (Водаспорт) отказаха да направят подобна процедура - заявиха, че трябва да го изпратя до Финландия в централния сервиз на Suunto.<br />
<br />
*) Искам да отбележа, че процедурата е стандартна, т.е. използват се вградени заводски команди, за да се изтрие паметта и това по никакъв начин не поврежда софтуера (тествал съм компютъра няколко пъти и съм го сравнявал с друг по време на дайв).<br />
<b>НО все пак държа да отбележа, че отговорността си е ваша! Не поемам никаква гаранция, за това дали ще извършите процедурата правилно.</b><br />
<b>Просто споделям моя опит, защото е успешен и според мен всичко е достатъчно безопасно.</b><br />
<br />
<b>НЕ ПРАВЕТЕ ПРОЦЕДУРАТА СЛЕД ДАЙВ! ЩЕ БЪДЕ ИЗТРИТ и NO-FLY TIME, Т.Е. БРОЯЧА, КОЙТО ОТЧИТА ВРЕМЕТО, ПРЕЗ КОЕТО НЕ ТРЯБВА ДА ЛЕТИТЕ СЛЕД ГМУРКАНЕ!</b><br />
<br />
*) Софтуера би трябвало да работи без проблем за следните модели (аз съм тествал на D6):<br />
Vyper/Cobra/Vytec(ds)/Stinger/Mosquito/Gekko/D3, D9/D6/D4, Cobra2/3 and Vyper2/Air<br />
<br />
Ето и стъпките:<br />
<br />
1) Изтегляте си Suunto Eraser от тук: <a href="http://home.gci.net/~liquidimagephoto/Suunto.htm">http://home.gci.net/~liquidimagephoto/Suunto.htm</a> (директен линк: <a href="ftp://65.74.99.15/LiquidImagePhoto/SuuntoTools/DCEraserV3.0.zip">ftp://65.74.99.15/LiquidImagePhoto/SuuntoTools/DCEraserV3.0.zip</a>)<br />
2) Изтегляте си стария софтуер на Suunto (Suunto Dive Manager 3), за да ползвате драйверите, които ще инсталира на PC-то Ви: <a href="http://www.suunto.com/bg/products/software/suunto-dive-manager">http://www.suunto.com/bg/products/software/suunto-dive-manager</a> (директен линк: <a href="http://ns.suunto.com/software/diving/SDM_Setup_3.1.0.exe">http://ns.suunto.com/software/diving/SDM_Setup_3.1.0.exe</a>)<br />
3) Инсталирате Suunto Dive Manager 3<br />
4) Свързвате Suunto компютъра с кабел към PC-то си<br />
5) Изчаквате PC-то да открие, че е закачено Suunto-то (долу в systray bar-a при часовника ще изпише, че е открил нов device свързан към PC-то)<br />
6) Пускате Suunto Eraser и избирате правилния COM Port (обикновено ще имате само една опция)<br />
7) Избирате какво да бъде изтрито: Clear History, Clear Personal, Clear Profile, Factory New<br />
8) Избирате правилния Device Type (т.е. кой модел компютър ще изтривате):<br />
1 - Vytec / Vyper / Cobra / Stinger / Mosquito / Gekko / D3<br />
2 - D9 / D6 / D4<br />
3 - Cobra2 / Vyper2 / Cobra3 / VyperAir<br />
9) Натискате "Do It" и изчаквате (около 1-2 мин) докато не изпише, че всичко е наред "successful"<br />
<br />
Това е. :)<br />
<br />
Ако имате въпроси - насреща съм.<br />
<u>Отново напомням, че отговорността за описаната процедура си е ваша! Не поемам никаква гаранция, за това дали ще извършите процедурата правилно.</u></div>
<div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-34578070071636127482012-10-15T02:41:00.001+03:002012-10-15T02:55:42.593+03:00Yamaha CRW-F1/CRW-3200 - Best CD Audio Recorder<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZkjZv1qSsp9xoi3JZLI680MwdR4chuHH_Z4B0OTR_iOwX7zZFeH6MsxY9PvkQ_m_EgkCyrBmr_RvoIMFv7L6YWG_SA_kGGUylDz9Gq-haSMB3glGkQV2qc-GtzUr9e_Tk1fsRuQ/s1600/DSC_0008.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="212" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZkjZv1qSsp9xoi3JZLI680MwdR4chuHH_Z4B0OTR_iOwX7zZFeH6MsxY9PvkQ_m_EgkCyrBmr_RvoIMFv7L6YWG_SA_kGGUylDz9Gq-haSMB3glGkQV2qc-GtzUr9e_Tk1fsRuQ/s320/DSC_0008.JPG" width="320" /></a></div>
<br />
After my LG DVD writer failed recently it came to my mind that I should search for an audiophile CD Recorder to replace my broken one.<br />
That's how I got to know about Yamaha's CD Recorders they've build about 2001-2002 and their <a href="http://www.yamahamultimedia.com/yec/products/cdrw/crwf1.asp" target="_blank">AMQR (Audio Master Quality Record) System</a>.<br />
<br />
"ADVANCED AUDIO MASTER QUALITY RECORDING SYSTEM<br />
Yamaha's exclusive Advanced Audio Master Quality Recording System is designed to deliver professional quality audio and data recording using conventional 74, 80, 90 or 99 minute CD-R discs. No other CD-RW records audio or data as clearly as the CRW-F1 thanks to Yamaha's Advanced Audio Master System."<br />
<br />
The idea behind AMQR is that it makes longer and better grooves when writing data on the CD layer which transits to better reading by the CD player. And because of that CD Audio format does not have error correction information stored on the CD, the way that lost bits because of poor recording (or scratch) are recovered are not so good. But with AMQR they do not need to recover anything since CD readers aka CD played will read everything!<br />
<br />
Here are similar models that support AMQR:<br />
<br />
<br />
Yamaha CRW-F1<br />
Yamaha CRW-3200<br />
Yamaha CRW-2200<br />
Yamaha CRW-70<br />
Plextor Premium 2 (this one uses Yamaha's AMQR technology, too)<br />
<br />
And remember these can be found only second hand. :)<br />
<br />
Have fun!<div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com3tag:blogger.com,1999:blog-19720216.post-28527160226343980492012-08-12T14:24:00.003+03:002012-08-12T14:33:28.299+03:00Scale Background Image only with CSSHave you ever wondered how to scale background image directly in browser?<br />
<br />
A day ago I had to do optimization of an application for a client. At some point I found that major lag was caused when PHP code checks whether product image exists or not. Here's example how it was done:<br />
<br />
<blockquote class="tr_bq">
$file_headers = @get_headers($d->picture);<br />
if($file_headers[0] == 'HTTP/1.1 404 Not Found' || $file_headers[0] == 'HTTP/1.1 403 Forbidden' || $file_headers[0] == 'HTTP/1.1 301 Moved Permanently') {<br />
// show no-image IMG<br />
}<br />
else {<br />
// <span class="Apple-tab-span" style="white-space: pre;"> </span>echo $d->picture;<br />
}</blockquote>
<br />
<br />
For every image there was a HTTP call to check whether the image is there or not. This works fine but is rather slow and also loads the server in a silly way.<br />
<br />
After a little bit of a thinking over the problem I came with an elegant solution.<br />
What I did is I made two HTML elements one over the other. The first one holds the "no-image" image and the second one placed above the first one with a higher z-index hold the actual product image BUT (the catch is here) image is set as a background-image CSS.<br />
This way when the product image is missing user will see "no-image" and we do not need functionality to check whether product image exists or not.<br />
<br />
So our server is unloaded from this silly task. :)<br />
<br />
Here's an example code:<br />
<br />
<br />
<blockquote class="tr_bq">
.no-image {<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>background-position: middle center;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>position: absolute;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>width: 195px;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>height: 150px;<br />
}<br />
a.product-image {<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>background-position: middle center;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>background-repeat: no-repeat;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>position: absolute;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>width: 195px; height: 150px;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>display: block;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>-moz-background-size: cover;<br />
<span class="Apple-tab-span" style="white-space: pre;"> </span>background-size: cover;<br />
}
<br />
<div class="no-image" style="background-image: url('/upload/no-image.jpg');"></div><br />
<a href="'.$d->item_link.'" target="_blank" class="product-image" style="background: #000 url('<?php echo $d->pictures; ?>'); filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='<?php echo $d->pictures; ?>', sizingMethod='scale'); -ms-filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='<?php echo $d->pictures; ?>', sizingMethod='scale');"></a>
</blockquote>
<br />
<br />
But I needed scale product image right in the browser. You might have already noticed the code that makes this trick:<br />
CSS3 for Firefox, Safari and all WebKit browsers:<br />
<br />
<blockquote class="tr_bq">
-moz-background-size: cover;<br />
background-size: cover;</blockquote>
<br />
and code for IE6/7/8:<br />
<blockquote class="tr_bq">
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='pictures; ?>', sizingMethod='scale');<br />
-ms-filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='pictures; ?>', sizingMethod='scale');</blockquote>
<br />
That's it!<br />
Enjoy your great optimization.<br />
<br />
<br /><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com1tag:blogger.com,1999:blog-19720216.post-78501559877155769332012-04-23T18:12:00.001+03:002012-05-07T00:51:25.629+03:00A Lab PSU (Power Supply)Two years I was wondering which Laboratory Power Supply to buy. I looked over Agilent and some Musteks, but most of them are expensive for me.<br />
<br />
Now I decided to build one functional and cheap. What I do need:<br />
<br />
- 3A max current<br />
- 0-30V variable voltage<br />
- variable current<br />
<br />
Here is the choosen <a href="http://www.electronics-lab.com/projects/power/001/index.html" target="_blank">schematic</a>. After reading on the forum I saw that the schematic has big issues fortunately a friend from out Bulgarian Audiophille Forum has made good work and I just got his PCB error free.<br />
<a href="http://diyfan.blogspot.com/2012/02/adjustable-lab-power-supply.html" target="_blank">This is his website go and check the real deal</a><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBqMouDt4ZzIYHxL_Jt8GhT3roITvXgiG7Qc-K1z6cete29qm7sIoQ99BmslaWNAnVbe0AApNmcoPHvx3VTUc7BmqvfwJg8SrorkNJUefIF6FD84kdNgIKQ_sZUvxCRGFene3dKg/s1600/2012-05-06+19.34.25.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBqMouDt4ZzIYHxL_Jt8GhT3roITvXgiG7Qc-K1z6cete29qm7sIoQ99BmslaWNAnVbe0AApNmcoPHvx3VTUc7BmqvfwJg8SrorkNJUefIF6FD84kdNgIKQ_sZUvxCRGFene3dKg/s400/2012-05-06+19.34.25.jpg" width="300" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQ_0b4nofHEiKxUW8cjVz_zBCNfDyjz7QUTZNGqmADML1KqjwWxg-HzKkn6ROXrsVniDiqopUAmyzGJyJBUCkNtmugAL0vsBb0KpJJRhcz62U3A22om9I_lChlaCgZit0oND0UAg/s1600/2012-04-22+13.56.06.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQ_0b4nofHEiKxUW8cjVz_zBCNfDyjz7QUTZNGqmADML1KqjwWxg-HzKkn6ROXrsVniDiqopUAmyzGJyJBUCkNtmugAL0vsBb0KpJJRhcz62U3A22om9I_lChlaCgZit0oND0UAg/s400/2012-04-22+13.56.06.jpg" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhk00jA34Z9vTY386MrRNSdiwMaE3DMXESEs_t3XSwsUjQRCkVCb6xKf8HmxnvPKuPvyjnRHwfSbHOlyeiy6vPVJ1Lzkfdys8sjRQVMvg7fFZ45r_zpiVWZGaSJNk4bgqfu6xknJA/s1600/2012-04-22+14.58.57.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhk00jA34Z9vTY386MrRNSdiwMaE3DMXESEs_t3XSwsUjQRCkVCb6xKf8HmxnvPKuPvyjnRHwfSbHOlyeiy6vPVJ1Lzkfdys8sjRQVMvg7fFZ45r_zpiVWZGaSJNk4bgqfu6xknJA/s400/2012-04-22+14.58.57.jpg" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwQ-zkcgMPrav6FUeBgH1RHPS-b8DbCStFXwxGZ2zvWg5pU57lZeXfvcdsuTAaL1f_qPXnYpWrxpF1WSR4rjiIWIO1FPiokNWCvNZyWNn2IzIk2FXK5EAPs18LZMvAnp-_nMFSkg/s1600/2012-04-22+14.59.06.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwQ-zkcgMPrav6FUeBgH1RHPS-b8DbCStFXwxGZ2zvWg5pU57lZeXfvcdsuTAaL1f_qPXnYpWrxpF1WSR4rjiIWIO1FPiokNWCvNZyWNn2IzIk2FXK5EAPs18LZMvAnp-_nMFSkg/s400/2012-04-22+14.59.06.jpg" width="400" /></a></div>
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I added a termocontroller with a fan because the module can quickly overheat with this small sink I have for the main power transistor if you push it a lot.</div>
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Enjoy!</div>
<br /><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com2tag:blogger.com,1999:blog-19720216.post-19516225374954944402012-02-28T18:14:00.007+02:002012-02-29T14:10:33.269+02:00How to calculate crossovers for speakers<div>While making my <a href="http://blog.svilen.com/2011/12/open-baffle-speakers-finished.html">Custom Speakers</a> (inspired by <a href="http://lampizator.eu/SPEAKERS/PROJECTS/P17/Endorphine%20from%20Kingston%20Kitchen.html">Lampizator's Endorphine 17 project</a>) I was wondering how to calculate the crossovers.</div><div><br /></div><div>I read a lot of theory, downloaded a bunch of programs, etc., but finally I came to the conclusion that the simplest crossover works best and I will describe you how you can make it by yourself.</div><div><br /></div><div>First you need to find out the impedance of your speakers. Mine are 5Ohm Saba pairs, so I will make the example calculations based on that.</div><div><br /></div><div>1) For tweeter you can put a capacitor in series which will form a first order High Pass filter which have to cut off frequencies below ~8kHz-10kHz (above those most midrange drivers became weak). In my case this is a 3-4uf capacitor. I choose 3,3uf capacitor.</div><div>You can use this calculator to find out what capacitance will suit in your case:</div><div><a href="http://sim.okawa-denshi.jp/en/CRtool.php">http://sim.okawa-denshi.jp/en/CRtool.php</a></div><div><br /></div><div>2) For midrange you need to make a Band Pass filter, so you can cut the low frequencies where the midrange driver is weak and the very high where it is also becoming weak and the tweeter will support it.</div><div>For Saba midrange driver these are below 300-400Hz and above 9-10kHz, so I needed a coil to filter high frequencies and a capacitor to filter very low frequencies - all put in series to the driver.</div><div>In my case this is a 0.39mH (mili Henry) coil and a 100uf capacitor. The 0.39mH coil start to cut off frequencies above 2kHz but with decent step so it can match to the tweeter filter correctly at ~9kHz.</div><div>And the 100uf capacitor will cut off everything below 318Hz, which is pretty fine.</div><div><br /></div><div><div>Here is a band pass calculator which will show you all the curves:</div><div><a href="http://sim.okawa-denshi.jp/en/RLCtool.php">http://sim.okawa-denshi.jp/en/RLCtool.php</a></div></div><div><br /></div><div>More straight forward calculator for the High Pass part of the Band Pass filter: <a href="http://sim.okawa-denshi.jp/en/CRtool.php">http://sim.okawa-denshi.jp/en/CRtool.php</a></div><div>And a straight forward calculator for the Low pass part: <a href="http://sim.okawa-denshi.jp/en/LRtool.php">http://sim.okawa-denshi.jp/en/LRtool.php</a></div><div><br /></div><div>3) Now we come to the bass section. The goal is to support the midrange. You can use any 12" or 15" speakers here. I choose Saba 10" 5Ohm because my room is pretty small and I had a bass extension boxes (without back wall of course!).</div><div>So let's see how we can cut off everything above 300-400Hz with a Low Pass filter (passes everything below the cut off frequency)</div><div>Here we have to be more aggresive that's why we will use a Second order Low Pass filter which consists of a coil in series to the driver and a capacitor connected to the ground.</div><div>I went with a 4mH coil (because of the price) and a 10uf capacitor. I could use a 50uf capacitor so I can get a 350Hz cut off frequency, but since I use a 10" bass speaker it is a little big weaker than 12" ot 15", I decided to go to higher cut off frequency so I can compensate the small bass speaker size.</div><div>But you should definitely make your calculations in a way that you cut everything above 300-400Hz if you have bigger bass speakers.</div><div><br /></div><div>This is the calculator you can use: <a href="http://sim.okawa-denshi.jp/en/RLClowkeisan.htm">http://sim.okawa-denshi.jp/en/RLClowkeisan.htm</a></div><div>*) remember you have to connect bass speakers with reverse polarity! So they can cancel each other with the midrange driver where they overlap, e.g. minimize unwanted destructive acoustic interference in the frequency region covered by both woofers and main/midrange speakers.</div><div><br /></div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYSVe4pDw3zHqITiKI_2-j3fcyDbT2DDpfHrY5T4qWp2qwdzDXck9gWhJ96RVU0PB1j7735ZuTkA8X-0TTpwN2obwAj5ZJ_pg50dj_vfjh2HShj8M9MA-4MyWewrNOoS074yi8rw/s1600/crossover.png"><img style="cursor:pointer; cursor:hand;width: 212px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYSVe4pDw3zHqITiKI_2-j3fcyDbT2DDpfHrY5T4qWp2qwdzDXck9gWhJ96RVU0PB1j7735ZuTkA8X-0TTpwN2obwAj5ZJ_pg50dj_vfjh2HShj8M9MA-4MyWewrNOoS074yi8rw/s400/crossover.png" alt="" id="BLOGGER_PHOTO_ID_5688180371561831250" border="0" /></a><div>Here is my crossover as a final schema.</div><div><br /></div><div>Coils have to be with low resistance (2-5Ohm). I use Jantzen Audio coils - C-Coil for bass and Wax Coil for midrange - <a href="http://jantzen-audio.com/html/coils.html">http://jantzen-audio.com/html/coils.html</a>. Very very good coils from Danmark!</div><div><br /></div><div>Final advice - do not use electrolytes. Buy PIO or Polypropilene capacitors. They are much better and you will hear the difference. Even if you use old russian PIOs (Paper In Oil).</div><div>Chinese Obbligato <a href="http://www.partsconnexion.com/capacitor_film_obbligato_oil.html">http://www.partsconnexion.com/capacitor_film_obbligato_oil.html </a>and <a href="http://www.partsconnexion.com/capacitor_film_obbligato_psu.html">http://www.partsconnexion.com/capacitor_film_obbligato_psu.html</a> are very good.</div><div><br /></div><div>If you have a small budget you can go with electrolytes, of course, but do not forget that the signal wire have to be connected to plus (+) side of the electrolyte capacitor.</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com2tag:blogger.com,1999:blog-19720216.post-45291948549250869422012-02-28T00:14:00.006+02:002012-02-28T18:13:26.618+02:00Starting a Headphones Tube Amp project<div>A month ago I found 4 tubes 6n1p in my stuff, so I decided to use them. But what's the best thing you can use 4 russian tubes - of course, a headphone amp. And I do need one now since I am listening to music on headphones almost 5-6 hours per day.</div><div><br /></div><div>I found a pretty good schematic for 6n1p headphone amp <a href="http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=bender_prj.htm">here</a> (<a href="http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=bender_prj.htm">http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=bender_prj.htm</a>) by Bruce Bender.</div><div>I ordered all parts that I was missing and here are they.</div><div><br /></div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiuzOkh03BEYanbg-vaZbNQHYFQOihq695ES0tKmudBIoJjduYYJBfA08Pse0ITDjQRk_Ir80gtIkAQZp0aWvKYj7xac9aD0DYWqV1NIHjqnE26wGaS_w_MG8pAL1eHPLExnDZD6A/s1600/DSC00178.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiuzOkh03BEYanbg-vaZbNQHYFQOihq695ES0tKmudBIoJjduYYJBfA08Pse0ITDjQRk_Ir80gtIkAQZp0aWvKYj7xac9aD0DYWqV1NIHjqnE26wGaS_w_MG8pAL1eHPLExnDZD6A/s400/DSC00178.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5713942669739108530" /></a><div><br /></div><div>Like most people I need my drug to get some inspiration and motivation for work - Jelibon beans. :)<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEix4wgFYScHAh31vh2WJqjV0GBx1IArjb9H7mZKeyFm7sHBg2Z-dvRHs_KYX4Hcz9z-f-B_K4iiLSBQrXV4b0elA5k3GYBy-w95WZO1tBHYR26JZF5X3jBIlssGeucV63Jwg7VY8w/s1600/DSC00179.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEix4wgFYScHAh31vh2WJqjV0GBx1IArjb9H7mZKeyFm7sHBg2Z-dvRHs_KYX4Hcz9z-f-B_K4iiLSBQrXV4b0elA5k3GYBy-w95WZO1tBHYR26JZF5X3jBIlssGeucV63Jwg7VY8w/s400/DSC00179.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5713942832399672034" /></a><div><br /></div><div>I made the power supply for heaters and anodes.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSMIeO9EhsLtNZy_49NfCFWrSFjkddhIpo6XfN2uS64DXr-Po28XUB18vmxI1BiUhO2lqymWT62JxkK04_srLu4v4j0vMoLrMOoKPzNhkWNTtDeRTT7lpdE5Y5mTbPvlZPUzc5KQ/s1600/DSC00183.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSMIeO9EhsLtNZy_49NfCFWrSFjkddhIpo6XfN2uS64DXr-Po28XUB18vmxI1BiUhO2lqymWT62JxkK04_srLu4v4j0vMoLrMOoKPzNhkWNTtDeRTT7lpdE5Y5mTbPvlZPUzc5KQ/s400/DSC00183.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5713942941934849810" /></a></div><div><br /></div><div>These are the 3 x 6n1p tubes. They are small but should be efficient.</div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com2tag:blogger.com,1999:blog-19720216.post-10783661926073811852012-02-27T23:54:00.005+02:002012-02-28T17:01:14.547+02:00Kenwood KA 1100DI would like to present you one of the best transistor amplifiers - the mighty <a href="http://audio-heritage.jp/TRIO-KENWOOD/amp/ka-1100d.html">Kenwood KA 1100D</a>.<div><br /></div><div>As a friend of mine said "It is the Cadillac of Kenwood's amps during 80s".</div><div><br /></div><div>It has a very, very good phono preamp and desent sound compared to most of the good tube amps.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWb1DUQgj1lI8yDBQHkdn1IaAMYNZKG2pyVTNvw6CFF4mrzN1VmAqogSHvOykKCKYF4CHY00szFeUj8NDTf3wTF6FBHyvdgJk_1qk6wb4jbXeRYpD87UEZ0dTUM59HIohQTRxKqQ/s1600/DSC00197.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgWb1DUQgj1lI8yDBQHkdn1IaAMYNZKG2pyVTNvw6CFF4mrzN1VmAqogSHvOykKCKYF4CHY00szFeUj8NDTf3wTF6FBHyvdgJk_1qk6wb4jbXeRYpD87UEZ0dTUM59HIohQTRxKqQ/s400/DSC00197.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5713941486623829314" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFSmSYFHcJ4BS8bt7cHWip0HVz5EkbN2cUr_vmVQavjW0iNFeZ_L41q5cspZGJO4KBiumfjOpMYYTcGtxEotgKqNifpeI6qECZh6548XTLgEENi5ZuhEJEXKTMOfh_twKPbwpUEQ/s1600/DSC00201.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFSmSYFHcJ4BS8bt7cHWip0HVz5EkbN2cUr_vmVQavjW0iNFeZ_L41q5cspZGJO4KBiumfjOpMYYTcGtxEotgKqNifpeI6qECZh6548XTLgEENi5ZuhEJEXKTMOfh_twKPbwpUEQ/s400/DSC00201.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5713941718337386962" /></a></div><div><br /></div><div>Inside view.</div><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXCSq38MF-6k_Sd5U3vKpICA-AeFtQBBa2cme4PeH0ynqhI8mQNCHCEEH1O7njiIh3JYBpJznT5kG9IbNNGMMhgLVyo6EmaEAzAKKqAnD4Ka0qmLios84SOxYcJH4lFFSaurD4Pw/s1600/DSC00204.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXCSq38MF-6k_Sd5U3vKpICA-AeFtQBBa2cme4PeH0ynqhI8mQNCHCEEH1O7njiIh3JYBpJznT5kG9IbNNGMMhgLVyo6EmaEAzAKKqAnD4Ka0qmLios84SOxYcJH4lFFSaurD4Pw/s400/DSC00204.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5713941967590743874" /></a></div><div><br /></div><div>You can see 4 big Elna capacitors here - total capacitance 60 000uF!</div><div><br /></div><div>If you can get one - do not hesitate! It's a perfect solid state amplifier!</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com1tag:blogger.com,1999:blog-19720216.post-69023506547341097972012-02-17T15:23:00.018+02:002012-02-17T16:26:40.012+02:00Modding/Upgrading Marantz CD50 - part 5<span class="Apple-style-span" style="color:#3333FF;">Other mods to this player:</span><br /><a href="http://blog.svilen.com/2011/01/moddingupgrading-marantz-cd50.html">part 1</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-2.html">part 2</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-3.html">part 3</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-4.html">part 4</a><div>part 5 (this paper)</div><div><br /></div><div><a href="http://www.fidelityaudio.co.uk/1541%20clocking_03.2ver.pdf">Download PDF - TDA1541A reclock/DEM clock</a></div><div><br /></div><div>Almost a year since my last mods to this Marantz player, yesterday I came up with new ideas about it.</div><div><br /></div><div>Here's what I decided to do and deep listening test after every mod step by step I confirm here only those that really do change the sound to a even higher level than before.</div><div><br /></div><div>1) I removed the crappy Nichicon Muse 22uf output capacitors and put perfect <a href="http://thetubestore.com/ampohm.html">Ampohm</a> 4.7uf Polypropillene capacitors directly to the output RCA sockets.</div><div>Here you can use every PIO (Paper In Oil), polypropillene, styroflex capacitor with value between 1uf and 10uf.</div><div>Please do not use old russian ship container like caps or the small ceramic caps.</div><div><br /></div><div>2) I had some Blackgates 100uf-470uf/25V and put them everywhere - around DAC, around digital chip, around opamps. They make the best sound for opamps in matter of not distorting the signal in any way. I've tried Nichicon Muse, Elna Silmic II, etc. but they all put some of their taste to the sound and I do not like that. I wanted pure, flat, without distortions capacitors and these are only Blackgates.</div><div><br /></div><div>3) Variable output board was removed. It uses the +/-15V from the power supply which are used by the TDA1541A DAC and opamps, so this step will relieve a little bit the PSU.</div><div><br /></div><div>4) For opamps I decided to switch to <a href="http://www.national.com/pf/LM/LM4562.html">LM4562HA</a>. They are really good!</div><div><br /></div><div>5) Before the main 7805 regular in the PSU I decided to put in ~20000uf capacitance.</div><div>The rule of thumb says that if you drawn 1A of current you need at least 20000uf capacitance so you can filter perfectly the 50Hz/60Hz noise from the main line.</div><div>Here we do not have such currents, although I decided to put 7 x 3000uf caps in parallel forming 21000uf multicap</div><div><br /></div><div>6) All diodes was change to schottky ones. Schottky are smoother. You have to change all diodes in the played so you can hear a real difference. Changing only one rectifier won't have any effect you can hear.</div><div><br /></div><div>7) After all regulators (7805, 7806, 7815, 7915) I put 2x the original capacitance tantalum capacitors (yellow ones on the pictures below)</div><div><br /></div><div>8) I removed all small 100nf ceramic SMD capacitors on TDA1541A's decoupling pins and then I put 0.47uf WIMA. You really have to remove the SMDs first! Believe me!</div><div><br /></div><div>9) Have you read about DEM clock for TDA1541A? It's time! You should read <a href="http://www.fidelityaudio.co.uk/1541%20clocking_03.2ver.pdf">THIS</a> PDF.</div><div>After that just change the capacitor between 16th and 17th pins for 120pf/1% tolerance one and you will be amazed.</div><div><br /></div><div>Here are some photos during these interventions.</div><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwZPKC-j2JEXYZOstF-Q6ZkzreJSsQJQ4_4gUC0WIrh-JMX-rxQHamj9R8VJXeq-Sq86obovpH1GU6V2sXGID1vMG4Do5LZUm1T8kfPLCgsN9zYOwbuAH4wlXHFcteM4xuZUs4Ng/s1600/DSC00085.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwZPKC-j2JEXYZOstF-Q6ZkzreJSsQJQ4_4gUC0WIrh-JMX-rxQHamj9R8VJXeq-Sq86obovpH1GU6V2sXGID1vMG4Do5LZUm1T8kfPLCgsN9zYOwbuAH4wlXHFcteM4xuZUs4Ng/s400/DSC00085.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710105984229782706" /></a><div>Multicap bank of 7 x 3000uf/16V put before the main 7805 regulator.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg48MNpmaC_ttn4CrbwDnk7LIFr9HQCUcCAqwBTmlceFEN_dx91B2ixLTWd0kOEbdPjx_jeEDOzXrkSqiD_ROZp4e5RX4iYjQgsIh3OJwt7rBiftm6uWFUfVYzdwMcb95uOLDK69w/s1600/DSC00160.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg48MNpmaC_ttn4CrbwDnk7LIFr9HQCUcCAqwBTmlceFEN_dx91B2ixLTWd0kOEbdPjx_jeEDOzXrkSqiD_ROZp4e5RX4iYjQgsIh3OJwt7rBiftm6uWFUfVYzdwMcb95uOLDK69w/s400/DSC00160.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710106223499617922" /></a></div><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9VR5sOq8DsHNrwbokkgg0u2_znhRg5yf0K8xea_cLU5wFZ2ZUbqvYkFbwxWl8ozUPR-54o9qUsFmU3oLc9xmfmIbSiNTvU-hkPcc0mfGuR-fFVdmDGa09hKrivpCl4YdgbwX8Yw/s1600/DSC00162.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi9VR5sOq8DsHNrwbokkgg0u2_znhRg5yf0K8xea_cLU5wFZ2ZUbqvYkFbwxWl8ozUPR-54o9qUsFmU3oLc9xmfmIbSiNTvU-hkPcc0mfGuR-fFVdmDGa09hKrivpCl4YdgbwX8Yw/s400/DSC00162.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710106357580511314" /></a></div><div>0.47uf Wima caps on the 14 decoupling pins of TDA1541A. You see the little blue cap of 120pf for DEM lock.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLW5TxyD0MDedb0H3FpoHGQ-m6nN1c2iYRwsCEKaC40M1RnMT8JVqGgTDq-hFmMVeqDRfONrPluE2vaOqyHlrpdjfiOSDF1rT1PFLISKWkRJAjj5wZBlc5oZ22_W85QIWfN78UAw/s1600/DSC00163.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLW5TxyD0MDedb0H3FpoHGQ-m6nN1c2iYRwsCEKaC40M1RnMT8JVqGgTDq-hFmMVeqDRfONrPluE2vaOqyHlrpdjfiOSDF1rT1PFLISKWkRJAjj5wZBlc5oZ22_W85QIWfN78UAw/s400/DSC00163.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710106482361377266" /></a></div><div>Upgraded capacitance to 6600uf before 7815 regulator.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6vXF2srnTt7jcPHh5LiBRSqy543tkUZ-sBg3AO93gBu6k1UkbCTw031v_BAk1ecp4s4pzFdthwks8t58vOoq_UzbWRuaY1IYIXVSM_IlrAoxBsUsSQEwOPc_xtLQn5FfQVZ-d6Q/s1600/DSC00167.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6vXF2srnTt7jcPHh5LiBRSqy543tkUZ-sBg3AO93gBu6k1UkbCTw031v_BAk1ecp4s4pzFdthwks8t58vOoq_UzbWRuaY1IYIXVSM_IlrAoxBsUsSQEwOPc_xtLQn5FfQVZ-d6Q/s400/DSC00167.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710106611294722514" /></a></div><div>View of the whole player with clock, main line AC RFI filter, all Blackgates, big 21000uf caps bank, etc.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn6S1xd6c0xEpcbumjE-uMczVUxeoryw38Mw2Pjq-QRc-4U6VJCrnhbrFVdOQtY1nN4YEy1zgI2WMMx9etBuqqv45O4_puDV6DQBRrQno7LYG7clzbimpVGMY9GCG69LQ3BaVbQA/s1600/DSC00168.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgn6S1xd6c0xEpcbumjE-uMczVUxeoryw38Mw2Pjq-QRc-4U6VJCrnhbrFVdOQtY1nN4YEy1zgI2WMMx9etBuqqv45O4_puDV6DQBRrQno7LYG7clzbimpVGMY9GCG69LQ3BaVbQA/s400/DSC00168.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710106739191029042" /></a></div><div>The great output Ampohm 4.7uf capacitors.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPZE-xHm30HU5S4HqFxSnu26WkHZj2mMNYnNiFTgo7BYxmexdKgnh482M94EaLM12f1cxpcJwUA_jBMRfqbLLMsxHw9zXe1391sGu3JC4XG7uZFR7QfqyMMERCKnacCPqMYYOJqw/s1600/DSC00169.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPZE-xHm30HU5S4HqFxSnu26WkHZj2mMNYnNiFTgo7BYxmexdKgnh482M94EaLM12f1cxpcJwUA_jBMRfqbLLMsxHw9zXe1391sGu3JC4XG7uZFR7QfqyMMERCKnacCPqMYYOJqw/s400/DSC00169.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710106901943190162" /></a></div><div>Some Blackgates.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmE6prs7Pm4dgq5ZZeR1mXzBj2dYWZdqIvR2zRJdPkEBoPrPWceSCNjt14DyfOcMghGQJMqRBEvqPStxChrUYo8mYAQDXisNvFCQYHXD7I-oPoEpJjUuNGe4e5xZSsm8Xjd3WqSA/s1600/DSC00170.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmE6prs7Pm4dgq5ZZeR1mXzBj2dYWZdqIvR2zRJdPkEBoPrPWceSCNjt14DyfOcMghGQJMqRBEvqPStxChrUYo8mYAQDXisNvFCQYHXD7I-oPoEpJjUuNGe4e5xZSsm8Xjd3WqSA/s400/DSC00170.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710107076985308146" /></a></div><div>More Blackgates for the digital filter chip.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2SbtBDYW1JYVQGDpINMsFv6ygzGAZOBmmytvhyphenhyphenbRM5b6OryHmfXcilFcQ8zg8nI1fOGmuuVYpq0345lXzHj30duqV76A9drAMKR5OPQMJPzfZT0P7dQyRUXj_dcz6qSVByuKdYw/s1600/DSC00171.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2SbtBDYW1JYVQGDpINMsFv6ygzGAZOBmmytvhyphenhyphenbRM5b6OryHmfXcilFcQ8zg8nI1fOGmuuVYpq0345lXzHj30duqV76A9drAMKR5OPQMJPzfZT0P7dQyRUXj_dcz6qSVByuKdYw/s400/DSC00171.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710107205187844594" /></a></div><div>Main capacitor bank installed in the player.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhF2_JdUokySbSZXU4rV_a41UuGOHzkD15RBDZnq-_6JGKoQLfwJ33V-j9v7U0whhNba9yJNiocxUfnSrmPpP-VcmaqiXm3mm0rk3DeF3vEBuUEFde5VSLY9tCjRjD7AWSaK48EXQ/s1600/DSC00172.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhF2_JdUokySbSZXU4rV_a41UuGOHzkD15RBDZnq-_6JGKoQLfwJ33V-j9v7U0whhNba9yJNiocxUfnSrmPpP-VcmaqiXm3mm0rk3DeF3vEBuUEFde5VSLY9tCjRjD7AWSaK48EXQ/s400/DSC00172.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710107380346747042" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-i2RoUZJBS-x4R36jQh6kstanNEOw39LHwzVXQlm-FpIILZxKuyoh8AGG24Ep58ou_tPThpX3boDHdRjfg_YUOexLqQnAInUUfe_0EqFq2EdvAGbYrFt_J7ZbY419OE5_m8GcQA/s1600/DSC00174.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-i2RoUZJBS-x4R36jQh6kstanNEOw39LHwzVXQlm-FpIILZxKuyoh8AGG24Ep58ou_tPThpX3boDHdRjfg_YUOexLqQnAInUUfe_0EqFq2EdvAGbYrFt_J7ZbY419OE5_m8GcQA/s400/DSC00174.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710107684158930306" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBRItMsZyZ-bPsGibCFvBYSKjoEhNOIDLlEJoppS0EHg0X0lFWE_b15Gxy1ZF6Hf6OOJspcVxnOgebwWLJplH0k3MfIituqE5fSVkap3knMmCGncoXQQL2VtTnql4PgHjykcY7nA/s1600/DSC00175.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBRItMsZyZ-bPsGibCFvBYSKjoEhNOIDLlEJoppS0EHg0X0lFWE_b15Gxy1ZF6Hf6OOJspcVxnOgebwWLJplH0k3MfIituqE5fSVkap3knMmCGncoXQQL2VtTnql4PgHjykcY7nA/s400/DSC00175.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710107787295440946" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8wL-239muDWQAs0mSCjAaw8R6dIqWsQwak_XpPrFoKuAzVuD1HVFsd6gLayYtJXX2dihAEe0-aaJx3xpg_f3J6fNMRgVf36SbkIyYw_eSosJVl1Gw_LJqC-gE9STaHi_WUtZhXQ/s1600/DSC00176.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8wL-239muDWQAs0mSCjAaw8R6dIqWsQwak_XpPrFoKuAzVuD1HVFsd6gLayYtJXX2dihAEe0-aaJx3xpg_f3J6fNMRgVf36SbkIyYw_eSosJVl1Gw_LJqC-gE9STaHi_WUtZhXQ/s400/DSC00176.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710107935834387490" /></a></div><div>AC RFI filter. Very, very important! And costs only 8EUR.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-PKQnUVdcFrRkkuQy7L3B1L1VGreNbkxgcbv_jSVDHq6dnzCi6lH8HJhWQvRuVYEW-xf5N5K3EYIG6aGW0EpLVSkzEqa3MaJ5D1-CzzTVI2H2nPzBOvVvgNi7CgFSNAWySO68iw/s1600/DSC00177.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-PKQnUVdcFrRkkuQy7L3B1L1VGreNbkxgcbv_jSVDHq6dnzCi6lH8HJhWQvRuVYEW-xf5N5K3EYIG6aGW0EpLVSkzEqa3MaJ5D1-CzzTVI2H2nPzBOvVvgNi7CgFSNAWySO68iw/s400/DSC00177.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5710108051034466130" /></a><br /><br /></div><div>That's it for now!</div><div>I am very pleased with my last upgrades to this player.</div><div><br /></div><div><br /><div>What's comming:</div><div><br /></div><div>* +/-15V PSU low noise, low impendace for DAC and opamps</div><div>I will try one of these:</div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- Jung, Sulzer, D44H11 - regulator designs</div><div><br /></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>- shunt regulator:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a-12.html">http://www.diyaudio.com/forums/digital-source/201057-marantz-cd-50-cd-60-tda1541-cdm4-19-a-12.html</a></div><div><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://img21.imageshack.us/img21/3240/shunt.jpg">http://img21.imageshack.us/img21/3240/shunt.jpg</a></div><div><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.acoustica.org.uk/t/3pin_reg_notes4.html">http://www.acoustica.org.uk/t/3pin_reg_notes4.html</a></div></div></div><div><br /></div><div><br /></div><div>*) Please, do not bother saying that it looks awful. I know. It's a test player for different type of mods, so I do not care for the look. I just want to hear if something is worth the effort applying in my primary player and/or some player of a friend.</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com7tag:blogger.com,1999:blog-19720216.post-21670463051160401162011-12-11T01:16:00.006+02:002011-12-11T14:44:12.656+02:00Shure V15 Type III - Wonderful Turntable Cartridge<div>Today I received my "new" Shure V15 Type III cartridge for my Lenco L75 turntable.</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnVLMDjj5XRPt2weKO9it0Oyc3RiV3MVXNrmRJ6tMFDyy2P0-Lc0OBpRKVrzts_7o2RbKZsyh2OCsSW0ndYkK75OkANExfCOd8pPb-dNnz6T9izyhVfWuwcHkXVfdx6eTBBxU7Uw/s1600/DSC09930.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnVLMDjj5XRPt2weKO9it0Oyc3RiV3MVXNrmRJ6tMFDyy2P0-Lc0OBpRKVrzts_7o2RbKZsyh2OCsSW0ndYkK75OkANExfCOd8pPb-dNnz6T9izyhVfWuwcHkXVfdx6eTBBxU7Uw/s400/DSC09930.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5684835645260951474" /></a><br /><br /><div><br /><div>After inspecting the stylus (it's hiperelliptical! A perfect diamont shape for great analogue sound) I saw minor traces of wear.</div><div>I went for careful cleaning the tip because after a dozen of hours listening it usually gets carbon deposits from the dust in the records' grooves.</div><div><br /></div><div>And ... miracle! The tip now looks very, very good ... near perfect!</div><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIHv4YBBGHsCc6ZyV07_dYHJxwmN6Q9QrQwBdP0dLOgRcEAdiOd87jSezXX0F8tY0DiYWsSsaK1ll8WabJAeIHeLrTZy4FvBcyPE7LdEzq66UfTCR9bd3MEZ3kHxKvBAbbR-sguA/s1600/DSC09933.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIHv4YBBGHsCc6ZyV07_dYHJxwmN6Q9QrQwBdP0dLOgRcEAdiOd87jSezXX0F8tY0DiYWsSsaK1ll8WabJAeIHeLrTZy4FvBcyPE7LdEzq66UfTCR9bd3MEZ3kHxKvBAbbR-sguA/s400/DSC09933.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5684850539372114386" /></a><br /><br /><div><br /></div>Shure cartridge mounted on the Linn Basic LV V tonearm</div><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyZjRLCCb29kd4hea_a7Jb0LScEk8x_HGLxEQ18_hhVEq7mOrf8g6i2oFrRi9MAi8wX6gAFMIoGKgbRVz1ZVtPvGdBBRFnTHugrbxzss28xvJXjWRGcT23HkTX_3BjBS8VEqq6uw/s1600/DSC09928.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyZjRLCCb29kd4hea_a7Jb0LScEk8x_HGLxEQ18_hhVEq7mOrf8g6i2oFrRi9MAi8wX6gAFMIoGKgbRVz1ZVtPvGdBBRFnTHugrbxzss28xvJXjWRGcT23HkTX_3BjBS8VEqq6uw/s400/DSC09928.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5684835517281617602" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5tZmsLfHT8gsE63RIHScrKaNWauuaWHNMoLHqGjYtk-0S734RZrEE8pnvvO25QNG2zsEL8VlRg9hbYiHhcAcA0_xlTGblYs5fKGaapt0RIaNWwLhJtRwRW-pnVaZcwbljZKWJxQ/s1600/DSC09927.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5tZmsLfHT8gsE63RIHScrKaNWauuaWHNMoLHqGjYtk-0S734RZrEE8pnvvO25QNG2zsEL8VlRg9hbYiHhcAcA0_xlTGblYs5fKGaapt0RIaNWwLhJtRwRW-pnVaZcwbljZKWJxQ/s400/DSC09927.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5684642706289554274" /></a><br /><br /></div><div><br /></div><div>Shure V15 Type III in all it's glory!</div><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgznoG5xO4rIMDLBGUKIEsfKYOz_bFEbUw9cKhZgg4WQXvGCwBPhCSwPXD33uf1CXrvPtCiQH6-mwDdNNpdvPdTrHaBRT0XF00fdp8YlnLveZgCuPFIFif0vSxR6R3WmboveiWetA/s1600/DSC09929.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgznoG5xO4rIMDLBGUKIEsfKYOz_bFEbUw9cKhZgg4WQXvGCwBPhCSwPXD33uf1CXrvPtCiQH6-mwDdNNpdvPdTrHaBRT0XF00fdp8YlnLveZgCuPFIFif0vSxR6R3WmboveiWetA/s400/DSC09929.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5684835579567937906" /></a></div><div><br /></div><div><br /></div><div>If you wonder what should be the next cartridge you have to try on your turntable - go for Shure V15 Type III!</div><div>Its fantactic sound deserves every penny.</div><div><br /></div><div>Enjoy!</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com8tag:blogger.com,1999:blog-19720216.post-48326773671680004452011-12-10T00:16:00.017+02:002011-12-20T14:05:24.536+02:00Open Baffle Speakers - Finished!<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtQ7NYwm3bk6PfCMGmGx0urhNF68CiwrrUdmBB4AD7V3rod9gkn2KSo-QZwuA3oTBt-gEJw-gqm6MBbak73IeSW4uUxIgK52qx69gj1N118z-A_Thpqr1sogqVd7EG74t_Dhf2pg/s1600/DSC08864.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtQ7NYwm3bk6PfCMGmGx0urhNF68CiwrrUdmBB4AD7V3rod9gkn2KSo-QZwuA3oTBt-gEJw-gqm6MBbak73IeSW4uUxIgK52qx69gj1N118z-A_Thpqr1sogqVd7EG74t_Dhf2pg/s400/DSC08864.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256740174149682" border="0" /></a><br /><br />In <a href="http://blog.svilen.com/2011/05/open-baffle-speakers.html">May 2011 I wrote</a> that I am going to build my first Open Baffle Speakers with Saba drivers.<br /><br />Now six months later I have finished my first speakers' project and I am very very glad.<br /><br />I choose the Open Baffle design for it's simplicity but added a bass extender. It works great!<br />Cross over is very very simple and effective. Here's the schema:<br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYSVe4pDw3zHqITiKI_2-j3fcyDbT2DDpfHrY5T4qWp2qwdzDXck9gWhJ96RVU0PB1j7735ZuTkA8X-0TTpwN2obwAj5ZJ_pg50dj_vfjh2HShj8M9MA-4MyWewrNOoS074yi8rw/s1600/crossover.png"><img style="cursor:pointer; cursor:hand;width: 212px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYSVe4pDw3zHqITiKI_2-j3fcyDbT2DDpfHrY5T4qWp2qwdzDXck9gWhJ96RVU0PB1j7735ZuTkA8X-0TTpwN2obwAj5ZJ_pg50dj_vfjh2HShj8M9MA-4MyWewrNOoS074yi8rw/s400/crossover.png" alt="" id="BLOGGER_PHOTO_ID_5688180371561831250" border="0" /></a><br /><br /><br />Left speaker<br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzdPFU5ZB-2lzgzWY8llcHFrCmbcKuvYbvVdURjvSO90PKEcIv7ct0NmDfLgM1Ak5QIHc-a_ZQkIQ8UsK0dW_WNLzhVFAy5nCnBTiYIJ7uvLuS-YoZYor5rPOL1HVZIg-lrQtHuA/s1600/DSC08867.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhzdPFU5ZB-2lzgzWY8llcHFrCmbcKuvYbvVdURjvSO90PKEcIv7ct0NmDfLgM1Ak5QIHc-a_ZQkIQ8UsK0dW_WNLzhVFAy5nCnBTiYIJ7uvLuS-YoZYor5rPOL1HVZIg-lrQtHuA/s400/DSC08867.JPG" alt="" id="BLOGGER_PHOTO_ID_5684257050832816626" border="0" /></a><br /><br />Right speaker<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiy2sM5LRhgxloXEYK7vIQg7xiv2KSqgcA4gQwJ1V4w6bmVOU417ldDgS_ZcQXlxiYFbFA9i7-ozZmmwJgpSWqwdHaxZLkYiElKdBizz3Bhmin72ddF0KdJMCe95m9_gq_8JcZvlA/s1600/DSC08866.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiy2sM5LRhgxloXEYK7vIQg7xiv2KSqgcA4gQwJ1V4w6bmVOU417ldDgS_ZcQXlxiYFbFA9i7-ozZmmwJgpSWqwdHaxZLkYiElKdBizz3Bhmin72ddF0KdJMCe95m9_gq_8JcZvlA/s400/DSC08866.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256977904215522" border="0" /></a><br /><br />Open Baffle in its glory!<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkJ9Cpdw-zwE0sCQ2tt0ol_vuBq72IJWD3wEBuNmFmtTMQDnMSsfcVTdxXi9sOi604XBHmPmDK0pv8gLX6LXpjgOXnoUiqYb0qzcUPIdCIPJRcf5iXtNDgnwJSsxUD7x07C0buIg/s1600/DSC08863.JPG"><img style="cursor:pointer; cursor:hand;width: 300px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjkJ9Cpdw-zwE0sCQ2tt0ol_vuBq72IJWD3wEBuNmFmtTMQDnMSsfcVTdxXi9sOi604XBHmPmDK0pv8gLX6LXpjgOXnoUiqYb0qzcUPIdCIPJRcf5iXtNDgnwJSsxUD7x07C0buIg/s400/DSC08863.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256497401561282" border="0" /></a><br /><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZxgwqBOLUx4epToqQOJK_RZTGIVrHUglD26rNvL4IZidtsMqOTnYcdMG3qM1VkBH3Dv_KLisu7yCcfiKQbhZkqGZhvtR75uewAXVDuJxKEtWCDEnOcJXtsB87-blWoc9sa-P9lQ/s1600/DSC08862.JPG"><img style="cursor:pointer; cursor:hand;width: 300px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZxgwqBOLUx4epToqQOJK_RZTGIVrHUglD26rNvL4IZidtsMqOTnYcdMG3qM1VkBH3Dv_KLisu7yCcfiKQbhZkqGZhvtR75uewAXVDuJxKEtWCDEnOcJXtsB87-blWoc9sa-P9lQ/s400/DSC08862.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256421716783362" border="0" /></a><br /><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc3V2d1mDn92NPaX4ye3SKP3kxAbqJlQ5sdmxEe-cNsIcCYEP3q-e11eWqjRwY4F-X0bs5ZK6TwLLnffq4LaQPNibxUPgUWNsoLcb-xNxT2RbjkF3Bl5Tl5tCNqxDpQxwQ3CDOpA/s1600/DSC08861.JPG"><img style="cursor:pointer; cursor:hand;width: 300px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgc3V2d1mDn92NPaX4ye3SKP3kxAbqJlQ5sdmxEe-cNsIcCYEP3q-e11eWqjRwY4F-X0bs5ZK6TwLLnffq4LaQPNibxUPgUWNsoLcb-xNxT2RbjkF3Bl5Tl5tCNqxDpQxwQ3CDOpA/s400/DSC08861.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256363244626866" border="0" /></a><br /><br />Speaker's body after painting and polishing<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh65ogXnTQqqrFFnhoIJWV-0bJL2Lqb1meUG5DKKQIp3K42pFT6FByWXC22Glwdsu65D8CqqdljLZN48r7MwCdLPEcjdLV7k9R3IMO3Z_Vl0nK-mQcU-1dvfaQI2elD8_z4mGVDuA/s1600/DSC08860.JPG"><img style="cursor:pointer; cursor:hand;width: 300px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh65ogXnTQqqrFFnhoIJWV-0bJL2Lqb1meUG5DKKQIp3K42pFT6FByWXC22Glwdsu65D8CqqdljLZN48r7MwCdLPEcjdLV7k9R3IMO3Z_Vl0nK-mQcU-1dvfaQI2elD8_z4mGVDuA/s400/DSC08860.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256308367762834" border="0" /></a><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikwjPB37nNiU6wYS-4CAO-qNpMj0h5jkiucWiE5aWtuPD7p9UnSgZZVzFXcAYavT4b8j3mkjRTyBZQ8PSKCCRJI_nIcyj_73cp26QYVb8yvrDiw8TNkLsjJG4PXSRROV7n_9ivwQ/s1600/DSC08859.JPG"><img style="cursor:pointer; cursor:hand;width: 300px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikwjPB37nNiU6wYS-4CAO-qNpMj0h5jkiucWiE5aWtuPD7p9UnSgZZVzFXcAYavT4b8j3mkjRTyBZQ8PSKCCRJI_nIcyj_73cp26QYVb8yvrDiw8TNkLsjJG4PXSRROV7n_9ivwQ/s400/DSC08859.JPG" alt="" id="BLOGGER_PHOTO_ID_5684256240793648850" border="0" /></a><br /><br />Back side after wiring speakers and crossover<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTEF9fr3_SM5A9MYBdycl_9xD2hBor0JrXFSUcrmsVMmSZkxcE2NKGv8f3QAGR35bEJfl3NfwGaEPqrI2bjBz70NK9t_lxeAAN8W_esRb7ZO-KASAWH45SFkeLhzm8yRohsIhiwQ/s1600/DSC08870.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTEF9fr3_SM5A9MYBdycl_9xD2hBor0JrXFSUcrmsVMmSZkxcE2NKGv8f3QAGR35bEJfl3NfwGaEPqrI2bjBz70NK9t_lxeAAN8W_esRb7ZO-KASAWH45SFkeLhzm8yRohsIhiwQ/s400/DSC08870.JPG" alt="" id="BLOGGER_PHOTO_ID_5684257188354431170" border="0" /></a><br /><br />Bi-wiring to the amplifier<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMDqCepnL7lzq8k2kvsw2I-jmR5pKnC9L0oV0wUregWJ9jzt79Uam03bAUAaYsY5q-ZBf1K0kd-0l4eGRXLlILAxZsqp1Azjn81gW6k9IKx09ahnjEAJw1Cp4FZ9FeD9i0MyEHjw/s1600/DSC08868.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMDqCepnL7lzq8k2kvsw2I-jmR5pKnC9L0oV0wUregWJ9jzt79Uam03bAUAaYsY5q-ZBf1K0kd-0l4eGRXLlILAxZsqp1Azjn81gW6k9IKx09ahnjEAJw1Cp4FZ9FeD9i0MyEHjw/s400/DSC08868.JPG" alt="" id="BLOGGER_PHOTO_ID_5684257121400600162" border="0" /></a><br /><br />My final decision: the best speakers I have ever had under 500EUR!<br /><br />They sound like new 3000EUR Jamo and maybe better clarity.<br /><br />Yes. That's right! :)<div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com11tag:blogger.com,1999:blog-19720216.post-23629371579844901522011-11-01T20:26:00.010+02:002011-12-24T04:10:38.522+02:00How to combine Munin and TEMPer (USB Temperature Sensor) ? (part 2 - November 2011)<a href="http://blog.svilen.com/2010/09/how-to-combine-munin-and-temper-usb.html">Last year I posted an article about combining TEMPer and Munin.</a><br /><br />A month ago I decided to add a second TEMPer to my configuration so I can keep track of the outside temperature during the winter since I have moved the server outside on the terrace in a special box.<div><br /></div><div>The idea was that this server can keep a normal working temperature by itself in a small box isolated with wooden walls from the outside weather during the winter ( down to -15 C outside temp ) and with an open box's ceiling in the summer ( up to 35 C outside temp ).</div><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-ann9RsRRzIg81nppkiETxP1vXcDmqyDfN0a4Q_XwO4MKwPvWh_HhVGpxDOaKkdLHSXRHcDSTKIqbp6RXby7F6drBhTlnuwRcqwyf9XG34ogWxqtUHXDzQkIk_2CSNn2pKJbIyQ/s1600/DSC08982.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-ann9RsRRzIg81nppkiETxP1vXcDmqyDfN0a4Q_XwO4MKwPvWh_HhVGpxDOaKkdLHSXRHcDSTKIqbp6RXby7F6drBhTlnuwRcqwyf9XG34ogWxqtUHXDzQkIk_2CSNn2pKJbIyQ/s400/DSC08982.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5670120884855280530" /></a><br />(inside view of server's box)<br /><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnUvmD9LlHqFQ3I6xYE7q2ZEYE4Lwyn4M9TgzUOqkiybrf80YiEkORyGA5mACm9NvwvAlouhd7JUPI_cBWYcNzY9ea-prHKdBFKqFhe04iT2YQJ4QgZRBXWKRDE-NV6DwItZRJDQ/s1600/DSC08985.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnUvmD9LlHqFQ3I6xYE7q2ZEYE4Lwyn4M9TgzUOqkiybrf80YiEkORyGA5mACm9NvwvAlouhd7JUPI_cBWYcNzY9ea-prHKdBFKqFhe04iT2YQJ4QgZRBXWKRDE-NV6DwItZRJDQ/s400/DSC08985.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5670121166579786514" /></a></div><div>(server's box closed and ready for a snowy winter)<br /><div><br /></div><div>Unfortunately the new TEMPer is using a new chipset which does not work with my Perl drivers and scripts.</div><div>After some research I found this C program <a href="http://www.svilen.com/pcsensor-0.0.1-patched.tar.gz">pcsensor-0.0.1-patched.tar.gz</a> which reads the temperature correctly from the new device.</div><div>Here are short steps and updated scripts so you can run the old TEMPer and the new one at the same time.</div><div><br /></div><div><div>1) wget -O pcsensor-0.0.1.zip http://www.svilen.com/pcsensor-0.0.1-patched.tar.gz</div><div>2) tar zxvf pcsensor-0.0.1-patched.tar.gz</div><div>3) cd pcsensor-0.0.1-patched</div><div>4) sudo apt-get install libusb-dev</div><div>5) make clean</div><div>6) make</div><div>7) sudo mv pcsensor /usr/bin/</div><div>8) sudo mv 99-tempsensor.rules /etc/udev/rules.d/99-tempsensor_new.rules </div><div><br /></div><div>or create file: /etc/udev/rules.d/99-tempsensor_new.rules</div><div>with this line inside:</div><div>SUBSYSTEMS=="usb", ACTION=="add", ATTRS{idVendor}=="0c45", ATTRS{idProduct}=="7401", MODE="666"</div><div><br /></div><div>9) sudo /etc/init.d/udev restart</div><div><br /></div><div>It's time to change <a href="http://munin-monitoring.org/">Munin's</a> script so that it can show readings from both TEMPers.</div><div><br /></div><div><div>10) sudo wget -O /usr/share/munin/plugins/sensors_ http://www.svilen.com/sensors_new_.txt</div><div>11) service munin-node stop</div><div>12) service munin-node start</div></div><div><br /></div><div>Within minutes you should see readings from both sensors in your Munin.</div></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1JW0EOlXPFuSi43XYfLbOJ2cYupaaTZEW2B1yHLpXZIghjL1pG3hAyS3bKmHwxcbWI1GaxTDRtmHACv6uCEzNQdkNI9hCiSAO7CpPRdFktOzW_i26M6sjHfi3cS5IRan2_q0qWQ/s1600/Screen+shot+2011-11-01+at+10.36.08+PM.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 276px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1JW0EOlXPFuSi43XYfLbOJ2cYupaaTZEW2B1yHLpXZIghjL1pG3hAyS3bKmHwxcbWI1GaxTDRtmHACv6uCEzNQdkNI9hCiSAO7CpPRdFktOzW_i26M6sjHfi3cS5IRan2_q0qWQ/s400/Screen+shot+2011-11-01+at+10.36.08+PM.png" border="0" alt="" id="BLOGGER_PHOTO_ID_5670129182812177522" /></a><br /><br /><div>Enjoy!</div></div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com1tag:blogger.com,1999:blog-19720216.post-4995201040799720242011-05-06T00:42:00.011+03:002011-12-09T23:50:35.106+02:00Open Baffle SpeakersTwo months ago I decided it was time to build my own speakers to replace my KEF Cresta 3 speakers in my bedroom.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQtZgNrAhopVTSfB0C6AjGeQ4htKHtPzcilV5z15ABZgxrAD-1kRBOpuG1kfe2XHpP0i09SASEEAwPOIpsj0E_f2_uhFUEvhdz0mD35yGl-ASftdElaBHD3scn1LP7YFaTxKT0oA/s1600/205495.jpg" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 340px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQtZgNrAhopVTSfB0C6AjGeQ4htKHtPzcilV5z15ABZgxrAD-1kRBOpuG1kfe2XHpP0i09SASEEAwPOIpsj0E_f2_uhFUEvhdz0mD35yGl-ASftdElaBHD3scn1LP7YFaTxKT0oA/s400/205495.jpg" border="0" alt="" id="BLOGGER_PHOTO_ID_5684249263068173762" /></a><br /><br /><div>I made a reseach on how to build my speakers, what kind, shape they have to be and I got onto <a href="http://members.myactv.net/~je2a3/open.htm">Open Baffle design</a>.</div><div>So I started doing some rough calculations and measures at the places I will want to put my new speakers and below is a sketch of my upcoming speakers I am building right now!</div><br />Front Panel/Baffle<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjh-ycMSuPUgyrO-5wRlItugzcVzar6ReU2XvL1ZvP2jGa9ooqmKOkvFZlX81rfroOzSXDIV9dYqEn1uBSIlj9aWiNc16zTm_KbKh8oLIgXl2LTixhCC0n8nfjCOq2aMiG7ihinXg/s1600/SCAN0137.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 310px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjh-ycMSuPUgyrO-5wRlItugzcVzar6ReU2XvL1ZvP2jGa9ooqmKOkvFZlX81rfroOzSXDIV9dYqEn1uBSIlj9aWiNc16zTm_KbKh8oLIgXl2LTixhCC0n8nfjCOq2aMiG7ihinXg/s400/SCAN0137.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603353383906253458" /></a><br /><br /><div>Side View<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-I-1koDsPH66laYTW_Zqe3iEUai-xCMDXZstm30RKV1b5IbJYBbHzkTgF-I1H7fxCXgUKyDx6KUgXTXekC3Z87mHiTkNOfvhKleC2Xv3yDt0zFTz1KtBrAZdOUqt6Px5FMAWROQ/s1600/SCAN0138.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 306px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-I-1koDsPH66laYTW_Zqe3iEUai-xCMDXZstm30RKV1b5IbJYBbHzkTgF-I1H7fxCXgUKyDx6KUgXTXekC3Z87mHiTkNOfvhKleC2Xv3yDt0zFTz1KtBrAZdOUqt6Px5FMAWROQ/s400/SCAN0138.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603353483347921522" /></a><br /><br /></div><div>Back Baffle<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgft7Za8DfFmS2g0M2IDIRQfKkzTwIt7U3zS5hAwwfI4zVZ6mtYRUUyUxMMQt1DDG_VvYWqA1gMiov-kfz-xA2mBMiSJlwdmtPJDzOWIMor-ieeQy_hweOdVhe71A3FCUmGKokqeg/s1600/SCAN0139.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 293px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgft7Za8DfFmS2g0M2IDIRQfKkzTwIt7U3zS5hAwwfI4zVZ6mtYRUUyUxMMQt1DDG_VvYWqA1gMiov-kfz-xA2mBMiSJlwdmtPJDzOWIMor-ieeQy_hweOdVhe71A3FCUmGKokqeg/s400/SCAN0139.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603353567791000914" /></a><br /><br /></div><div>I forgot to mention that I already knew which drivers I will use and my design had taken in account their size.</div><div><br /></div><div>So I will use the lovely paper SABA Speakers from 50-ties!</div><div>Yes, that right 50 year old speaker drivers with paper membrane are one of the best for all times and the best in its price range for sure! (around 100EUR for a pairs of tweeters and midrange and 100EUR for bass pair)</div><div><br /></div><div>Look at them. Aren't they are georgeous?</div><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTCwdHd6Bw7mzZwE3A4jCAsinFn-iuSlj_f9jVRybj3w1QxsD-RSANRehLOyTycSAIDUPcmrJ08SuqqUW1PSi99eZBTGH30uOP3tzeLSdcYjyfMPwIJjgfSIEUIPmvOqX1d8cTug/s1600/DSC08631.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTCwdHd6Bw7mzZwE3A4jCAsinFn-iuSlj_f9jVRybj3w1QxsD-RSANRehLOyTycSAIDUPcmrJ08SuqqUW1PSi99eZBTGH30uOP3tzeLSdcYjyfMPwIJjgfSIEUIPmvOqX1d8cTug/s400/DSC08631.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603354881438183394" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLjKPXzukW1_pW-NK7BA7KwFWD1yH6De0zUHuzkan5Ixt6f62ncA0PlPPCK0XeuIMAd28FOmCgQ8-Ntu7yNgiHdEOQaf9sx_Oq6QQlTPIiSRDz7NNmPzznvqzcVj9e-wBfjE7aAQ/s1600/DSC08632.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiLjKPXzukW1_pW-NK7BA7KwFWD1yH6De0zUHuzkan5Ixt6f62ncA0PlPPCK0XeuIMAd28FOmCgQ8-Ntu7yNgiHdEOQaf9sx_Oq6QQlTPIiSRDz7NNmPzznvqzcVj9e-wBfjE7aAQ/s400/DSC08632.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603354962130721650" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDfw6cDFnF13YMb92GYgUep67Hdg72fQ5v1BkJwKFkwSBzzvg8LxS47diA3aJqH7vE-ggL8PRwCwawbPFIoyBbJiKO5vWnhGnsgDfS3ID2EHqVec1YhtBsFhKVzMUHJVwwrvN75Q/s1600/DSC08633.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDfw6cDFnF13YMb92GYgUep67Hdg72fQ5v1BkJwKFkwSBzzvg8LxS47diA3aJqH7vE-ggL8PRwCwawbPFIoyBbJiKO5vWnhGnsgDfS3ID2EHqVec1YhtBsFhKVzMUHJVwwrvN75Q/s400/DSC08633.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603355030971708402" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwhGsiLJmkMP79pAWoTZtai6dv86aEV7yQgsaWmujJNYoW9cZRgQ33dERzu9qttZxX6Y_Z6BSUVILK5G2iwUhj-szYF57TsK4CB4Oynw3sY2aQ-tuZK9yAGS83I_LTJqW_XOIysA/s1600/DSC08634.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwhGsiLJmkMP79pAWoTZtai6dv86aEV7yQgsaWmujJNYoW9cZRgQ33dERzu9qttZxX6Y_Z6BSUVILK5G2iwUhj-szYF57TsK4CB4Oynw3sY2aQ-tuZK9yAGS83I_LTJqW_XOIysA/s400/DSC08634.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5603355131225820914" /></a><br /><br />Now it's time to do the carpentry.<br /><br />I will keep you posted.<div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-88630027064203203692011-03-31T11:05:00.008+03:002012-02-17T16:27:25.926+02:00Modding/Upgrading Marantz CD50 - part 4<span class="Apple-style-span" style="color:#3333FF;">Other mods to this player:</span><br /><a href="http://blog.svilen.com/2011/01/moddingupgrading-marantz-cd50.html">part 1</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-2.html">part 2</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-3.html">part 3</a><br />part 4 (this paper)<div><a href="http://blog.svilen.com/2012/02/moddingupgrading-marantz-cd50-part-5.html">part 5</a><br /><br />My final ideia for this player was a custom dedicated power supply regulators for the 2 most vital receiver chips - SAA7310 and SAA7220P/B.<div>I decided to use the upmarket version of 78xx regulator - LM2940CT-5, which is not so much noisy as the 78xx family and is easy to deploy on a PCB.</div><div><br /></div><div>Here is the schema I used for the PSU regulators. One this I should notice is that you should use tantalum caps or premium grade ones, low ESR.</div><div>For the 2200uF I have got 2 x Elna Starget which are low ESR caps and good for audio.</div><div>1uF cap is Kemet tantalum - very fast capacitor! and with low ESR again</div><div>the 220uF caps are again Kemet tantalum but old stock in big corpus</div><div>and of course close to the chip we have 330uF Sanyo Oscon SEPC (this one is on the PCB of the player).</div><div><br /></div><div>You might wonder why there is a 1R resistor in series. That was taken from the original Marantz design. It forms a Low Pass Filter with the Sanyo cap thus eliminating a low of the noise from the stock 7805 regulator at the cost of resistance.</div><div>That's okay in my opinion for this class of CD player. So I kept the resistors because the sound was better also checked by ears.</div><div><br /></div><div><a href="http://www.svilen.com/5vpowersupply.pdf">*) download power supply schema</a><br /><div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0TKsEsoapJ7t2PYp_zzN-c_94HaV_9O4zyikiyc2kMXuqdrKyDFIP_o0bERtOuJfGtRd7ENsBZ9u8bDmFcc6g_fvuj2vvggE9V1DhDc5OjAjjEyXUkuRZI24G0B_F1_l8fJFniw/s1600/5vpowersupply.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 112px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0TKsEsoapJ7t2PYp_zzN-c_94HaV_9O4zyikiyc2kMXuqdrKyDFIP_o0bERtOuJfGtRd7ENsBZ9u8bDmFcc6g_fvuj2vvggE9V1DhDc5OjAjjEyXUkuRZI24G0B_F1_l8fJFniw/s400/5vpowersupply.png" border="0" alt="" id="BLOGGER_PHOTO_ID_5590164946612919698" /></a><br /><br /></div><div>Power regulators' board which will be installed in the cd player<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIUifoWXZoil3nDkGSETC_KUszHXrA9vWWnJTI5RvdQuUuyRkxDCwTohtC0kajO80t2zPzP1TnyrWuXnQkebUcTS-oW8MQnmTxVm7yT-c2zoQq5LCE9-AgUwE5YG1cRaW0LX7brQ/s1600/DSC08284.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIUifoWXZoil3nDkGSETC_KUszHXrA9vWWnJTI5RvdQuUuyRkxDCwTohtC0kajO80t2zPzP1TnyrWuXnQkebUcTS-oW8MQnmTxVm7yT-c2zoQq5LCE9-AgUwE5YG1cRaW0LX7brQ/s400/DSC08284.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590163604470427842" /></a><br /><br /></div><div>Power regulators' board back<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMiADG_XQDQNiDD1WXG74GBAxk-wltox76SeOrIysFTmyCfBr3DVMGh8uvXxIbtl5NlX8oy9mD0KldGnQLg35rN4mGxaNfO6KbrxKORhfMwWbRn8opUvm367EXa0pi7MCOC0OHUw/s1600/DSC08285.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMiADG_XQDQNiDD1WXG74GBAxk-wltox76SeOrIysFTmyCfBr3DVMGh8uvXxIbtl5NlX8oy9mD0KldGnQLg35rN4mGxaNfO6KbrxKORhfMwWbRn8opUvm367EXa0pi7MCOC0OHUw/s400/DSC08285.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590163686120999938" /></a><br /><br /></div><div>New power board installed (bottom view)<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZqQK-CUOPNalwTTffWcsCH5E3zqVbEENubf40t6_gKcGBINYgIDY8vMyHe8uWIdA5Kyit9PgwWqFnTV-QNED6AsaSvBbvcQCZoSq2mJ0Nvx_E4WsANpIj0aRWpNPqK6medG3S0g/s1600/DSC08317.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZqQK-CUOPNalwTTffWcsCH5E3zqVbEENubf40t6_gKcGBINYgIDY8vMyHe8uWIdA5Kyit9PgwWqFnTV-QNED6AsaSvBbvcQCZoSq2mJ0Nvx_E4WsANpIj0aRWpNPqK6medG3S0g/s400/DSC08317.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590165299445555938" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPVdtIvOuWa0AGAxEK7Y-2x5phOhr60ZgTJfbIGtoEA_ehBc2mXgGAMg6tHhWcjt9twwFygUnbe5cu1yQyX9G8BbTwHVPvzosKM69F2zijEvMDuf6Dac396_iyHwkludciuOZegQ/s1600/DSC08318.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPVdtIvOuWa0AGAxEK7Y-2x5phOhr60ZgTJfbIGtoEA_ehBc2mXgGAMg6tHhWcjt9twwFygUnbe5cu1yQyX9G8BbTwHVPvzosKM69F2zijEvMDuf6Dac396_iyHwkludciuOZegQ/s400/DSC08318.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590165525219412018" /></a><br /><br /></div><div>Stealing points for power line of the power reg board<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBUuItYGPVpg8zHGuNGGgcDcn6fCDE7EF4cU9DXW-11fROTRbft0Is2ylpwTvWuwes6niIjWtkiuIc8qGVG7_ei_fYPQHXyDLwobO6Sjj-hGcoEMBPOs_fLcYEiYZpXV-d1ZV3vg/s1600/DSC08319.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBUuItYGPVpg8zHGuNGGgcDcn6fCDE7EF4cU9DXW-11fROTRbft0Is2ylpwTvWuwes6niIjWtkiuIc8qGVG7_ei_fYPQHXyDLwobO6Sjj-hGcoEMBPOs_fLcYEiYZpXV-d1ZV3vg/s400/DSC08319.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590165119018962866" /></a><br /><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDa_0exyc-gLCjAgJ7kKl4FU1JZXcn6CXW9qaiXTvdOg4Rw3LVEFuHr2tXH-XbzkQUgLUBm-aJ3A6Dxg5YLICJc0Fzc_byISmhENjOUFN6FgiXRlw8Ains-GLAsYzII72p4YhFvg/s1600/DSC08327.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDa_0exyc-gLCjAgJ7kKl4FU1JZXcn6CXW9qaiXTvdOg4Rw3LVEFuHr2tXH-XbzkQUgLUBm-aJ3A6Dxg5YLICJc0Fzc_byISmhENjOUFN6FgiXRlw8Ains-GLAsYzII72p4YhFvg/s400/DSC08327.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590167706128913202" /></a><br /><br /></div><div>Closer look to new power regulation board<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVjcr00BuNsENhlue9hV4bqhs5OukPebHgvvvKperC28dedElbkx06Qz4EbkvxRE900pNf67Bxa3crxgOJhISgb06_PA075xOdmsKGy0vAjEPPnMEVVW9WSs_05MPvM4ifWuPN4Q/s1600/DSC08326.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVjcr00BuNsENhlue9hV4bqhs5OukPebHgvvvKperC28dedElbkx06Qz4EbkvxRE900pNf67Bxa3crxgOJhISgb06_PA075xOdmsKGy0vAjEPPnMEVVW9WSs_05MPvM4ifWuPN4Q/s400/DSC08326.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590167012354945618" /></a><br /><br /></div><div>Power connection for SAA7220P/B chip on 24 pin leg<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwikSPI8vE7jd_trzwuXo_5TAm7HhQqg5C-ZcYCFNrs21HXU3NoHeQpRzqkaDTY76VJ9-n8Ii181CNiUUzSwL6kFo0-3zktumOPOrG94MsFN2nEbRzHUOLAGzEsvsq1jL596Et_g/s1600/DSC08323.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwikSPI8vE7jd_trzwuXo_5TAm7HhQqg5C-ZcYCFNrs21HXU3NoHeQpRzqkaDTY76VJ9-n8Ii181CNiUUzSwL6kFo0-3zktumOPOrG94MsFN2nEbRzHUOLAGzEsvsq1jL596Et_g/s400/DSC08323.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590166737500523666" /></a><br /><br /></div><div>Power connection for SAA7310 chip on 28 pin leg<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibze8RrMOSa6m_XNdPU9t20bBs30ie-dTmfYL3O_NRY_60h5Y7iHzLa02v36xZ8sDhz3AP9Z1KEasD_JkRMvPA17jYN_LKyosZDKVeEySCgI4P740xs7MmuUVzkuavz2R6xTTkmA/s1600/DSC08322.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibze8RrMOSa6m_XNdPU9t20bBs30ie-dTmfYL3O_NRY_60h5Y7iHzLa02v36xZ8sDhz3AP9Z1KEasD_JkRMvPA17jYN_LKyosZDKVeEySCgI4P740xs7MmuUVzkuavz2R6xTTkmA/s400/DSC08322.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590166665695826818" /></a></div></div><div><br /></div><div>And ... that's it! I am done with this marvellous cd player!</div><div>It has everything that can be upgraded and sings like a pure natural reality.</div><div><br /></div><div>I hope these articles will be useful to someone and if you have questions please leave me a comment below.</div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com4tag:blogger.com,1999:blog-19720216.post-49179762649580675732011-03-30T19:06:00.008+03:002012-02-17T16:27:41.341+02:00Modding/Upgrading Marantz CD50 - part 3<span class="Apple-style-span" style="color:#3333FF;">Other mods to this player:</span><br /><a href="http://blog.svilen.com/2011/01/moddingupgrading-marantz-cd50.html">part 1</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-2.html">part 2</a><br />part 3 (this paper)<br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-4.html">part 4</a><div><a href="http://blog.svilen.com/2012/02/moddingupgrading-marantz-cd50-part-5.html">part 5</a><br /><br />This part is dedicated to player's clock!<div>The one and only mighty clock that everyone is talking about so much.</div><div><br /></div><div>My personal opinion is that it really matters. But it matter in a way that it has a separate power supply with separate transformer.</div><div>Yes there is difference between a clock for 40$ and for 200$ but that difference is not as much as everyone thought.</div><div>If your cd player costs 100$ there is no point spending 200$ for a new clock, a 40$ bucks clock will do a perfect job. And yes - if your whole system is an expensive one (over 4000$) it's most probably that you will hear a noticeable difference between cheap and expensive clocks.</div><div><br /></div><div>But let's focus in our case on a 40$ bucks clock right away from eBay (Hong Kong seller).</div><div><br /></div><div>First thing (I've already mentioned it) is that you must use a separate transformer. A 5-10V@100mA output is perfect choise. Small and producing enough current.</div><div>You must know that correct and stable voltage is the more important than the current produced by the transformer (of course we should have enough at least the minimum required mA).</div><br /><br />First let me show you what I ordered from eBay for 36$ (including shipping)<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_v5QpJDElw9_Ygm_HHX_bbqniWjna3lrm2nPYC9kQaEK6b_KoO0SDTLMFpbWBoTvTgPWsJmUATL13qKMgLJCXvnoaME7RE-Zp8Ty4oaza2h5M74DTfHfhin4k9pqR0WOdDkdLWQ/s1600/DSC08231.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg_v5QpJDElw9_Ygm_HHX_bbqniWjna3lrm2nPYC9kQaEK6b_KoO0SDTLMFpbWBoTvTgPWsJmUATL13qKMgLJCXvnoaME7RE-Zp8Ty4oaza2h5M74DTfHfhin4k9pqR0WOdDkdLWQ/s400/DSC08231.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590148630626486594" /></a><br /><br />I must admit that this clock is worth every cent even though it is cheap one!<br /><br />Now you can see how I have installed it within the Marantz cd player<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZ7NuunJMquBiqayUjhhFHHDD2zH2vKVZdIJaP0wxhMaDBzTe4WtZgSZqFbsfCdiQBIO4oksQJYLxXKtaSaeb0UUokmU9LPCbtFRONdkCdXQriwu88e6Trh9_lWnofXVThVeifYA/s1600/DSC08243.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZ7NuunJMquBiqayUjhhFHHDD2zH2vKVZdIJaP0wxhMaDBzTe4WtZgSZqFbsfCdiQBIO4oksQJYLxXKtaSaeb0UUokmU9LPCbtFRONdkCdXQriwu88e6Trh9_lWnofXVThVeifYA/s400/DSC08243.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590148823260099282" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVI_jqOC4-GyYpk_MkvYSKbqTbKzXCiXPzBemcrbGsASNVEbuckFtaQQOUK7Wg3B1YXxtAkXsfte6OteBNt7W6rCLaBmrp8qLBwheBCvWdhZef52V1RHYPo4G4uDzVNGXVV1S13g/s1600/DSC08250.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVI_jqOC4-GyYpk_MkvYSKbqTbKzXCiXPzBemcrbGsASNVEbuckFtaQQOUK7Wg3B1YXxtAkXsfte6OteBNt7W6rCLaBmrp8qLBwheBCvWdhZef52V1RHYPo4G4uDzVNGXVV1S13g/s400/DSC08250.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590149081856979906" /></a><br /><br />To connect it you should first remove the old crystal along with the two capacitors bounded with it and connect the new clock at the XIN pin of the receiver chip. Please see the photo for better understanding.<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjW0y79NvDhSPmjdVzWsxHYtJelkhTx5KzOmWNvPoYM2ae3mO1ToPdCBGtL15v4ipaRTlCg305tZRuf8SI2QS5sZRjoU4W8KCN0bfYh0D7SAwMUmf2BM44xqmcziYRwnF2hj_jYvw/s1600/DSC08252.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjW0y79NvDhSPmjdVzWsxHYtJelkhTx5KzOmWNvPoYM2ae3mO1ToPdCBGtL15v4ipaRTlCg305tZRuf8SI2QS5sZRjoU4W8KCN0bfYh0D7SAwMUmf2BM44xqmcziYRwnF2hj_jYvw/s400/DSC08252.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590149225330032178" /></a><br /><br />Woala! You are ready, set and go! :) Plug in all the cords from the amplifier and power line and listen!<br /><br />An hour after installing the new clock I decided to upgrade all capacitors in the power supply. So here are some picture describing it.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZp9M7Xo8FfOuFtAIe8796ojMRQfbUyNaXgFowfNR0v6rGo2jyDraAjwEPZ6ha39MW-Olsa33Q4OIyq2lM28AZmA0K9P74DnFLANNj1VHMzr4dAqzk-_CBrCIM6kePJ3-YLn3bdw/s1600/DSC08233.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZp9M7Xo8FfOuFtAIe8796ojMRQfbUyNaXgFowfNR0v6rGo2jyDraAjwEPZ6ha39MW-Olsa33Q4OIyq2lM28AZmA0K9P74DnFLANNj1VHMzr4dAqzk-_CBrCIM6kePJ3-YLn3bdw/s400/DSC08233.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590149369075807506" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyWPs0uQhMBPM2Y_lByTtg9kLxMRkEYAkSGKHH2WrfWpUIrExSwBfL25skce21HrtexeGhghdC-yvGBeN3QrT3bTnc2T9uWPi_R73DjEGvcXIO1sM_arC26ecGo6PcRIDvqy640w/s1600/DSC08234.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyWPs0uQhMBPM2Y_lByTtg9kLxMRkEYAkSGKHH2WrfWpUIrExSwBfL25skce21HrtexeGhghdC-yvGBeN3QrT3bTnc2T9uWPi_R73DjEGvcXIO1sM_arC26ecGo6PcRIDvqy640w/s400/DSC08234.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590149502143846226" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoM0gQbENDWiN5ZwbAV8DRis4N6deNK3rnmtkz5Tj0ACuQWbHQgSuo1skI5bHM-Fx43I-BO96xzfYp81oWMFWIdlISKc-TYYephyQH9PRCiclVfSrFoEZYYI_YVX3cJfnQfER3FA/s1600/DSC08235.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoM0gQbENDWiN5ZwbAV8DRis4N6deNK3rnmtkz5Tj0ACuQWbHQgSuo1skI5bHM-Fx43I-BO96xzfYp81oWMFWIdlISKc-TYYephyQH9PRCiclVfSrFoEZYYI_YVX3cJfnQfER3FA/s400/DSC08235.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5590149726244647474" /></a><br /><br /><br />Done for now! :)</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com11tag:blogger.com,1999:blog-19720216.post-58579092476020167852011-03-30T16:22:00.018+03:002012-02-17T16:28:08.575+02:00Modding/Upgrading Marantz CD50 - part 2<span class="Apple-style-span" style="color:#3333FF;">Other mods to this player:</span><br /><a href="http://blog.svilen.com/2011/01/moddingupgrading-marantz-cd50.html">part 1</a><br />part 2 (this paper)<br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-3.html">part 3</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-4.html">part 4</a><br /><a href="http://blog.svilen.com/2012/02/moddingupgrading-marantz-cd50-part-5.html">part 5</a><div><br /><div>Almost 2 months ago I made a stunning <a href="http://blog.svilen.com/2011/01/moddingupgrading-marantz-cd50.html">mod to my Marantz CD50 player</a>.</div><div>Later on I decided to make some additional changes after my satisfaction with the first mod.</div><div><br /></div><div><span class="Apple-style-span" style="color:#000099;">*) Downloads</span></div><div><a href="http://www.svilen.com/acrfifilter.pdf">AC RFI filter schema</a></div><div><br /></div><div>1) AC RFI filter to the 220V power line right before the transformator.</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYeODv7Wyq1SJGqMeQ0-87aZvaY2Ni9RbSXuqDCM0ORhSa7Xlt9EQNYfzU-VhHqAo2_ruwceDyxXBVCZwMf6ycKX8nRL73VpVNKmUoi5yh9zFWqX6yiBUBWuV_-68pzRRihH4k1g/s1600/DSC08191.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYeODv7Wyq1SJGqMeQ0-87aZvaY2Ni9RbSXuqDCM0ORhSa7Xlt9EQNYfzU-VhHqAo2_ruwceDyxXBVCZwMf6ycKX8nRL73VpVNKmUoi5yh9zFWqX6yiBUBWuV_-68pzRRihH4k1g/s400/DSC08191.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589898908063083010" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiu7-59EeDQB-nuiHeUkK59dohjMhyphenhyphenSCXat_nig4Wlwsu9MH5E9X-IpXjm_ewGYaroqn9irnmVoNEhwozKH-OBbR0WRndKkLFiTLepT1OZj-UfKPm9jYFz1Qk7JDrPM0SIb2-305A/s1600/DSC08192.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiu7-59EeDQB-nuiHeUkK59dohjMhyphenhyphenSCXat_nig4Wlwsu9MH5E9X-IpXjm_ewGYaroqn9irnmVoNEhwozKH-OBbR0WRndKkLFiTLepT1OZj-UfKPm9jYFz1Qk7JDrPM0SIb2-305A/s400/DSC08192.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899017018530242" /></a><br /><br /><div>AC power stealing points for the RFI Filter<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-gWyBMLu027fnn3avGCiV4o2btp3_vyUBLHqeBAfd71ZUrXnEhcHHP6e3J_LfoEJCq8Rcb7g17j3FRXuw3_X-nKUthXJOOMeCw5lsFH_fuzM6aYBaMEBVIkJ69giWecU0p-VOyg/s1600/DSC08212.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-gWyBMLu027fnn3avGCiV4o2btp3_vyUBLHqeBAfd71ZUrXnEhcHHP6e3J_LfoEJCq8Rcb7g17j3FRXuw3_X-nKUthXJOOMeCw5lsFH_fuzM6aYBaMEBVIkJ69giWecU0p-VOyg/s400/DSC08212.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899331162027458" /></a><br /><br /><div>I have used a well known schema which is really working and you will hear difference.</div><div>The L1/L2 windind is actually <span class="Apple-style-span" style=" ;font-family:helvetica, arial, sans-serif;font-size:medium;">two wires wound tightly around one ferrite air core together 10-15 times (not like on the drawing, but both wires side by side ). </span></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi43ChfkMMES59jygvNqXkuChQrADB6xIKWruJawQWrVHZ-6U_BbeXPxlcuA58om5nZPHiLFj-sJCrd4zT2P7RADbi7idkNz7gzSR6zOaWjR_cXkk20pXvydTFe9FIk7n5DKoQyNQ/s1600/acrfifilter.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 81px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi43ChfkMMES59jygvNqXkuChQrADB6xIKWruJawQWrVHZ-6U_BbeXPxlcuA58om5nZPHiLFj-sJCrd4zT2P7RADbi7idkNz7gzSR6zOaWjR_cXkk20pXvydTFe9FIk7n5DKoQyNQ/s400/acrfifilter.png" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899185808969042" /></a><br /><br /></div><div>RFI filter installed in the CD Player<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYY6ySxkLcAsxPXpR4UiSHIS3MUWOfjYUfd1aUHfeH_XQzsu73TWu9kyByrGycsW7y0RWvDl2m7lqEmw3cg0Sog9Lbvt_mIM9cXotT2BR4jftcHcx6AuoLjm6JsQCyvKDIL9Nl5Q/s1600/DSC08216.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYY6ySxkLcAsxPXpR4UiSHIS3MUWOfjYUfd1aUHfeH_XQzsu73TWu9kyByrGycsW7y0RWvDl2m7lqEmw3cg0Sog9Lbvt_mIM9cXotT2BR4jftcHcx6AuoLjm6JsQCyvKDIL9Nl5Q/s400/DSC08216.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899686180127458" /></a><br /><br /><div>2) Switching to Blackgate capacitors around the op-amps ( I managed to found a couple of good old Blackgate F caps 470uf/25V from ebay. Checks with my ESR meter show that they were perfect. )</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEetcmaQMj6lZ0T19Im0nLKhFv4WMXagQL_nxbruM6H3VviN7LOL4SGMqBJ8PHQSpHbe_VQqAfrtmq3GouMuuyuDs2uDahL6HVnCJfHIAB-EX2KE3YrNXcN3H0oDoD7O9dtZl6jw/s1600/DSC08193.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEetcmaQMj6lZ0T19Im0nLKhFv4WMXagQL_nxbruM6H3VviN7LOL4SGMqBJ8PHQSpHbe_VQqAfrtmq3GouMuuyuDs2uDahL6HVnCJfHIAB-EX2KE3YrNXcN3H0oDoD7O9dtZl6jw/s400/DSC08193.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899527228347298" /></a><br /><br /></div><div>Here a picture of the already installed Blackgate capacitors and the AC line RFI filter<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5pA1i05g9JaUjzc9eywxTifKrLnFbj0wAWazSP1AEokevmFbYTdaVqdqiBdKe-9EeQUzPEFCHztI8-9FrYMXYZ_ZcdvBcQuoJP_3NULzo5hKXu-lslvcNu3Zk8cNP7UCbupgRuw/s1600/DSC08215.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5pA1i05g9JaUjzc9eywxTifKrLnFbj0wAWazSP1AEokevmFbYTdaVqdqiBdKe-9EeQUzPEFCHztI8-9FrYMXYZ_ZcdvBcQuoJP_3NULzo5hKXu-lslvcNu3Zk8cNP7UCbupgRuw/s400/DSC08215.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899783002531922" /></a><br /><br /><div>3) Change all Oscons with Sanyo Oscon SEPCs</div><div>4) Change all other capacitors in digital with tantalum caps</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4xf8cusoO4LACuc76qUTOl8MMoM8xl9thJMgQjXBqvx9UlX_kpEYl5CKrPC6Hkf4XrregJOoZc-hvN8LeRB2N-vv4l-4Pdw9tblhz4pZ1XejUsyM0WqfZNJOfLyhc5InYFWnlOQ/s1600/DSC08205.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4xf8cusoO4LACuc76qUTOl8MMoM8xl9thJMgQjXBqvx9UlX_kpEYl5CKrPC6Hkf4XrregJOoZc-hvN8LeRB2N-vv4l-4Pdw9tblhz4pZ1XejUsyM0WqfZNJOfLyhc5InYFWnlOQ/s400/DSC08205.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5589899892518469666" /></a></div><div><br /></div><div>At the end the result was very suprising.</div><div>I was not sure if there will be any different with the already moded player. But definitly all of these improvement changed the sound in a more natural and pure way.</div><div><br /></div><div>If you wonder whether to use an AC RFI filter for the power line - please don't! Just install one and you will hear the difference. No more parasite sounds/echoes, no more "Please stop the music, because it drives me a headache after an hour of listening". It really removes all (or at least most) of those noises that the 220V/50Hz catches on its way from the electric company's power stations to our cd player.</div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com1tag:blogger.com,1999:blog-19720216.post-29997160406137462192011-01-31T21:46:00.017+02:002012-02-17T16:28:24.013+02:00Modding/Upgrading Marantz CD50<span class="Apple-style-span" style="color:#3333FF;">Other mods to this player:</span><br />part 1 (this paper)<br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-2.html">part 2</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-3.html">part 3</a><br /><a href="http://blog.svilen.com/2011/03/moddingupgrading-marantz-cd50-part-4.html">part 4</a><div><a href="http://blog.svilen.com/2012/02/moddingupgrading-marantz-cd50-part-5.html">part 5</a><br /><br />A month ago I got hands on one of the Marantz middle lineup cd player - Marantz CD50.<div>Sure its stock sound is kinda dull although it has one of the best DACs - TDA1541A.</div><div><br />*) UPDATE (06 Feb 2011): Today we made a blind listening test with 2 other guys comparing my moded Marantz CD 50 vs. stock Sony 337ESD vs. Kenwood DP7010<br />Everyone was surprised - moded Marantz CD 50 outperformed all of the others easily. You cannot image the difference. Even though the Sony sounds very very good, too.<br /><br /></div><div>After reading a lot of forums, blog posts etc. on the internet I finally ordered all the components I needed for tuning my player.</div><div>- a bunch of Os-con capacitors 330uF/6.3V I found them as the cheapest Os-cons on ebay today</div><div>- new LM2940CT-5 regulators 2pcs (will be used later on for special power supply to main digital chips)</div><div>- some WIMA MKP 0.47uF</div><div>- new op-amps Burr-Brown OPA2604</div><div>- and some tantalum capacitors</div><div><br /></div><div>So I started.</div><div><br /></div><div><span class="Apple-style-span" style="color: rgb(51, 51, 255);">* click on the pictures for better view</span></div><br />1) See my mighty Marantz CD50<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiklkFN4bB6-hXGCQAp9vFgTFXkd1LWY418XVg7yLS9UYpqqPAijgTGHSBKfLB-pAm8n70eEomdaky1mnbiuJl6bvUx5TLdSgkPlz_2vCS4HJG1BP13VEP8MvggMpWz9Oor802GsA/s1600/DSC08143.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiklkFN4bB6-hXGCQAp9vFgTFXkd1LWY418XVg7yLS9UYpqqPAijgTGHSBKfLB-pAm8n70eEomdaky1mnbiuJl6bvUx5TLdSgkPlz_2vCS4HJG1BP13VEP8MvggMpWz9Oor802GsA/s400/DSC08143.JPG" alt="" id="BLOGGER_PHOTO_ID_5568458568057524466" border="0" /></a><div><br /></div><div>2) First I Os-coned the PCB. All major capacitors in the digital and analog part became Sanyo Os-con.</div><div>TDA1541A, SAA7220, SAA7310 in the digital part</div><div>OPA2604 in the analog part (which will be put in the place of the NE5532)</div><div>all of then got Oscons 330uF/6.3V</div><div>Yes, 6.3V is okay as all of those chips work with 5V power supply. I will be better if the caps ratings were a little bit higher let's say 16V, but they are almost twice the price of 6.3V, so I decided that these will be fine.</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhz2b3aIXqwAhXDGzOSIkPk-2ju3op7RGVdKFZVyRisW9dKk3pjURVJObmPFlGJE45zGD-px90iTJihrAN9tiVLGBKJkJKO3Z_5EftiDFjw5EN8Yd1qS39R_WL3k3FSqpSGXDd6Lw/s1600/DSC08132.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhz2b3aIXqwAhXDGzOSIkPk-2ju3op7RGVdKFZVyRisW9dKk3pjURVJObmPFlGJE45zGD-px90iTJihrAN9tiVLGBKJkJKO3Z_5EftiDFjw5EN8Yd1qS39R_WL3k3FSqpSGXDd6Lw/s400/DSC08132.JPG" alt="" id="BLOGGER_PHOTO_ID_5568459328346455650" border="0" /></a><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOi8Dm2YCir1Swq1dz23y7vS2bK17lNJaia09W-ubMMdbo53RT1amqfzs4dmiiIS5FRHppEGuw2EGAr3EALbe00_cD1Z9y2-6-P869SdSX_6raALeSOoLfML_ckvWha-Sj0I1Hxw/s1600/DSC08133.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhOi8Dm2YCir1Swq1dz23y7vS2bK17lNJaia09W-ubMMdbo53RT1amqfzs4dmiiIS5FRHppEGuw2EGAr3EALbe00_cD1Z9y2-6-P869SdSX_6raALeSOoLfML_ckvWha-Sj0I1Hxw/s400/DSC08133.JPG" alt="" id="BLOGGER_PHOTO_ID_5568460395380597810" border="0" /></a><div><br /></div><div>3) It was time to throw again the stock op-amps. They are crap! And put the new OPA2604, which are FET op-amps much much better!</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlAo4YvOkEVhrW4e0Pn8F5YtMPzc9alhwyKP3n58gGzDuD1Xy9KPosEHQEDiDHi5j2wtGt5LSb3E9drmxJ3fCRGQusbx6uTepaaEBy5fYC6mEwtIfgV5YFqdm8BsthB7n7e3QPiQ/s1600/DSC08134.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjlAo4YvOkEVhrW4e0Pn8F5YtMPzc9alhwyKP3n58gGzDuD1Xy9KPosEHQEDiDHi5j2wtGt5LSb3E9drmxJ3fCRGQusbx6uTepaaEBy5fYC6mEwtIfgV5YFqdm8BsthB7n7e3QPiQ/s400/DSC08134.JPG" alt="" id="BLOGGER_PHOTO_ID_5568461265716238690" border="0" /></a><div><br /></div><div>4) Then I added new decoupling capacitors to the TDA's bit pins - 14 x WIMA 0.47uF MKP.</div><div>And also bypassed all vital power caps - all new Oscons and capacitors in the main power supply. This simple filter make a huge difference in my opinion.</div><div><br /></div><div>I also bypassed the main 5V regulator chip (7805 family) with a tantalum 100uF/25V from input leg to ground. This is vital because tantalum capacitors are fast and they put their charge into play exactly when it is most necessary.</div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbQUQYr1VSw1ocpJWVVHmqiJAKbmliv-sibqx7XKznFLt-CyntgHnMXAUaQ3Yh8h1fPVCcvwIfcuggATkiANbDNsuU_4wPQ1fP4J7wkVOSWD8Nuzym3rTrGyR2OSyiM_5Svba22w/s1600/DSC08131.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbQUQYr1VSw1ocpJWVVHmqiJAKbmliv-sibqx7XKznFLt-CyntgHnMXAUaQ3Yh8h1fPVCcvwIfcuggATkiANbDNsuU_4wPQ1fP4J7wkVOSWD8Nuzym3rTrGyR2OSyiM_5Svba22w/s400/DSC08131.JPG" alt="" id="BLOGGER_PHOTO_ID_5568462323461520178" border="0" /></a><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbQUQYr1VSw1ocpJWVVHmqiJAKbmliv-sibqx7XKznFLt-CyntgHnMXAUaQ3Yh8h1fPVCcvwIfcuggATkiANbDNsuU_4wPQ1fP4J7wkVOSWD8Nuzym3rTrGyR2OSyiM_5Svba22w/s1600/DSC08131.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"></a><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMjBLgk-WqFYkp5e2cEJUgabHESI2OdIGrrKcAe0no7wCMSxiJL2YmLef4Msz8sXhnUmDh_MO5VsVhLOFlynLlPF5to3kPPulWgaEyGat6TP2c51Uahqb1xQjVHQ2za2IXxCtISA/s1600/DSC08130.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjMjBLgk-WqFYkp5e2cEJUgabHESI2OdIGrrKcAe0no7wCMSxiJL2YmLef4Msz8sXhnUmDh_MO5VsVhLOFlynLlPF5to3kPPulWgaEyGat6TP2c51Uahqb1xQjVHQ2za2IXxCtISA/s400/DSC08130.JPG" alt="" id="BLOGGER_PHOTO_ID_5568463192938646946" border="0" /></a></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJn-m4rkuY4z3cPN3I7hUMadzCtWPvD_mWploJfUXB8R7Lb3Uoh-lVH0-b44ttMgVPJ9vd22ihVMLsCOdSDTSPD1Z56fLNkU38Jo6Bq-dXgsnuhDhQA9-iClZh0QimmDuDzalwLA/s1600/DSC08129.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJn-m4rkuY4z3cPN3I7hUMadzCtWPvD_mWploJfUXB8R7Lb3Uoh-lVH0-b44ttMgVPJ9vd22ihVMLsCOdSDTSPD1Z56fLNkU38Jo6Bq-dXgsnuhDhQA9-iClZh0QimmDuDzalwLA/s400/DSC08129.JPG" alt="" id="BLOGGER_PHOTO_ID_5568463371546768242" border="0" /></a><br /><div><br /></div><div>5) This time wanted to put into play a NOS mode, too. Non OverSampling. For those who do not know what it is - this is a change in which one of the chips (SAA7220) is being bypassed, because it does oversampling and filtering and thus changes the sound.</div><div>And I have to tell you - it's a killer mod! The results are real and you will hear.</div><div><br /></div><div>Instructions:</div><div><div>- Locate the "LEG 1"/pin 1 on the underside of TDA1541 and SAA7220 chips</div><div>- on SAA7220 cut both traces as close as possible to legs 15 and 16</div><div>- on TDA1541 cut trace as close as pos on leg 1</div><div>- using a thin wire connect the TDA1541 and SAA7220 legs 1 to 1, 2 to 2, and 3 to 3. </div><div>- connect the SAA7220 leg 23 to the other chip - the de-modulator chip SAA7210 leg 11.</div><div>* In case of the Marantz 40/50/60 - there is a newer chip - the SAA7310 - a square black spider with 44 legs - 11 legs on each side of the square. The mute pin is leg 18 (which looks like floating/not connected) </div><div>* In case of the SAA7220 and SAA7210 chips - if the mute trick does not work, you must float (isolate) the leg 11 on SAA7210 before connecting it to SAA7220P 's leg 23.</div></div><div>* for more details look closer into the images, I have put explanations there.</div><div><br /></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoyFhqpC0M4ZvDNOZmpzkXI8vgrkRCCq4yslfl3JSps9kc1yPjPqHqYp_qzfymehAXIy4PDZh4exTth0QYoAj-nLJbHLvGxq0ajdF0BSybC3WkCY77IbcEp2et00Jl3-_RwRfqtg/s1600/DSC08135.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoyFhqpC0M4ZvDNOZmpzkXI8vgrkRCCq4yslfl3JSps9kc1yPjPqHqYp_qzfymehAXIy4PDZh4exTth0QYoAj-nLJbHLvGxq0ajdF0BSybC3WkCY77IbcEp2et00Jl3-_RwRfqtg/s400/DSC08135.JPG" alt="" id="BLOGGER_PHOTO_ID_5568464384028328626" border="0" /></a><div><br /></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEOFoSyicnyNv3pd_bgmiSkfGvgriSvbuXPiuUHjce9L_gOdEcjlwQSkSBkWDhrjmV4IVBI2nNNNKPUkbbsYz2P7U9yYy-s-l22Y4giByy6x2smy52aNKydFtkJDFEV7aUyBSi4w/s1600/DSC08136.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEOFoSyicnyNv3pd_bgmiSkfGvgriSvbuXPiuUHjce9L_gOdEcjlwQSkSBkWDhrjmV4IVBI2nNNNKPUkbbsYz2P7U9yYy-s-l22Y4giByy6x2smy52aNKydFtkJDFEV7aUyBSi4w/s400/DSC08136.JPG" alt="" id="BLOGGER_PHOTO_ID_5568464572604597730" border="0" /></a><div><br /></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjI_gw1u0aCVAcBT3myT_OzKlZ8Lmbf2ROfg9g4aiE21eEpetssFs6Et9bRxE9ctshtXGsqewXk1aMNSS752BS2-TCbD850HG7Cvz61koJqgh4L8Jlg8u2Jgn9AWJn73WH1EH7Pow/s1600/DSC08138.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjI_gw1u0aCVAcBT3myT_OzKlZ8Lmbf2ROfg9g4aiE21eEpetssFs6Et9bRxE9ctshtXGsqewXk1aMNSS752BS2-TCbD850HG7Cvz61koJqgh4L8Jlg8u2Jgn9AWJn73WH1EH7Pow/s400/DSC08138.JPG" alt="" id="BLOGGER_PHOTO_ID_5568464829782668114" border="0" /></a><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjI_gw1u0aCVAcBT3myT_OzKlZ8Lmbf2ROfg9g4aiE21eEpetssFs6Et9bRxE9ctshtXGsqewXk1aMNSS752BS2-TCbD850HG7Cvz61koJqgh4L8Jlg8u2Jgn9AWJn73WH1EH7Pow/s1600/DSC08138.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"></a><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDG6DiaMcgpd2lY6eRiF_7AeFEjASlHt9L4HLLlB8LtmYmc0w8cj0h4-u0WsKJWpmRiPcQZoS_osen3vqjn0GFXjxoXk2A0GNCU0PmzViCNa85rBy6XDg5Aye8jGgJ55VTtCwKXw/s1600/DSC08140.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDG6DiaMcgpd2lY6eRiF_7AeFEjASlHt9L4HLLlB8LtmYmc0w8cj0h4-u0WsKJWpmRiPcQZoS_osen3vqjn0GFXjxoXk2A0GNCU0PmzViCNa85rBy6XDg5Aye8jGgJ55VTtCwKXw/s400/DSC08140.JPG" alt="" id="BLOGGER_PHOTO_ID_5568465034394421826" border="0" /></a></div><div><br /></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdAxzwDOg7asz1VZ8neQvslx50-yYPl0glNggjzi7GUVTt7dA3gN36hqYhiKI6FJFfcUQogMOFu9xFrHEVl_IJedbInFbnhaewWGmaXw5wZcCZgy5VACmzbbbFyGpOVgDRftSszw/s1600/DSC08137.JPG" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img style="cursor: pointer; width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdAxzwDOg7asz1VZ8neQvslx50-yYPl0glNggjzi7GUVTt7dA3gN36hqYhiKI6FJFfcUQogMOFu9xFrHEVl_IJedbInFbnhaewWGmaXw5wZcCZgy5VACmzbbbFyGpOVgDRftSszw/s400/DSC08137.JPG" alt="" id="BLOGGER_PHOTO_ID_5568465478914567074" border="0" /></a><div><br /></div><div><br /></div><div>6) Make sure you have put all new elements correct - preserve polarity on the electolite capacitors!</div><div><br /></div><div>7) Connect the player to power line 220V and be ready to unplug the cable if something smokes or bangs ( if you have connected your new electolite capacitors - Os-cons - with wrong polarity they can explode, but do not worry you will change them again ;-) )</div><div><br /></div><div>If everything is fine for 10 minutes ... connect to your amplifier and listen.</div><div><br /></div><div>That's it! Sit back, take a whiskey and have a great time listening to your favourite songs!</div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com18tag:blogger.com,1999:blog-19720216.post-74136450572249502442010-09-25T21:18:00.004+03:002010-09-26T10:37:40.404+03:00How to combine Munin and TEMPer (USB Temperature Sensor) ?Long long ago I always wrote about technical stuff in my computer experience.<div>It's about time to write something on that topic again and the story is about <a href="http://munin-monitoring.org/">Munin</a> (<a href="http://munin.ping.uio.no/">example</a>) and <a href="http://pcsensor.com/index.php?_a=viewProd&productId=15">TEMPer</a> (USB Temperature Sensor).</div><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigiGWCeIChOJ_wIObr4JYiFghaN1WgtDkL2LNdCYnK4sg6g9q-hASMUuVawVkcrTjIG_MCfFgBhbjRcBcltYZq9XO03nQYU1YTA8FTWXUgKRIFlWvMcy-ICREHR5q-_xypm4eJAg/s1600/TEMPer_main.jpg"><img style="cursor:pointer; cursor:hand;width: 400px; height: 400px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigiGWCeIChOJ_wIObr4JYiFghaN1WgtDkL2LNdCYnK4sg6g9q-hASMUuVawVkcrTjIG_MCfFgBhbjRcBcltYZq9XO03nQYU1YTA8FTWXUgKRIFlWvMcy-ICREHR5q-_xypm4eJAg/s400/TEMPer_main.jpg" border="0" alt="" id="BLOGGER_PHOTO_ID_5520918797450409330" /></a><div><br /></div><div><div>I decided that I want to keep an eye on the room's temperature and I searched for the cheapest possible external (USB) Termal Sensor. That's how I get hands on one of these TEMPer termal sensors.</div><div>It turns out that the sensor is great for the job except it's installation under linux (Ubuntu) in my case.</div><div><br /></div><div>So here are the steps for installing it under Ubuntu and adding a patched "sensors_" plugin for Munin.</div></div><div><br /></div><div><div>First you need to install "<a href="http://www.svilen.com/temper_mon.pl.txt">temper_mon.pl</a>"</div><div><br /></div><div>1) sudo apt-get install libusb-dev</div><div>2) sudo cpan -fi ExtUtils::MakeMaker </div><div>3) sudo cpan -fi Inline::MakeMaker </div><div>4) sudo cpan -fi Device::USB</div><div>5) sudo cpan -fi Device::USB::PCSensor::HidTEMPer</div><div>6) wget -O temper_mon.pl http://www.svilen.com/temper_mon.pl.txt</div><div>(alternative: wget -O temper_mon.pl http://www.cs.unc.edu/~hays/dev/bash/temper/temper_mon.pl)</div><div><br /></div><div>7) chmod a+x temper_mon.pl</div><div>8) run: sudo ./temper_mon.pl</div><div>(you should see temperature readings now)</div><div><br /></div><div>9) sudo cp ./temper_mon.pl /usr/bin/</div><div>(this is needed for the Munin plugin)</div><div><br /></div><div>10) sudo wget -O /etc/udev/rules.d/99-tempsensor.rules http://www.svilen.com/99-tempsensor.rules</div><div><br /></div><div>or create file: /etc/udev/rules.d/99-tempsensor.rules</div><div>with this line inside:</div><div>SUBSYSTEMS=="usb", ACTION=="add", ATTRS{idVendor}=="1130", ATTRS{idProduct}=="660c", MODE="666"</div><div><br /></div><div>11) sudo /etc/init.d/udev restart</div><div><br /></div><div>Now you should have fully running "<a href="http://www.svilen.com/temper_mon.pl.txt">temper_mon.pl</a>" script which will give you readings from the USB Temper device.</div><div><br /></div><div>Next step is to backup and replace Munin's "sensors_" plugin in /usr/share/munin/plugins</div><div><br /></div><div>1) sudo mv /usr/share/munin/plugins/sensors_ /usr/share/munin/plugins/sensors_old</div><div>2) sudo wget -O /usr/share/munin/plugins/sensors_ http://www.svilen.com/sensors_.txt</div><div>3) service munin-node stop</div><div>4) service munin-node start</div><div><br /></div><div>Now wait 5-10min and you should have reading in your Munin graphics.</div><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjf6EXn7ZtWcqrevLwxmzDOgPf-iK8exhW2ZtvuP-x2BScT-VeIvEpzJv3unFf1IdZe4iUwt8P_hKwGFklJPmVy6fHbApzpLx4haSYOIQsIiA0laT0tdxtfc3xvYScqHFySksVsOw/s1600/Screen+shot+2010-09-26+at+10.36.34+AM.png"><img style="cursor:pointer; cursor:hand;width: 400px; height: 226px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjf6EXn7ZtWcqrevLwxmzDOgPf-iK8exhW2ZtvuP-x2BScT-VeIvEpzJv3unFf1IdZe4iUwt8P_hKwGFklJPmVy6fHbApzpLx4haSYOIQsIiA0laT0tdxtfc3xvYScqHFySksVsOw/s400/Screen+shot+2010-09-26+at+10.36.34+AM.png" border="0" alt="" id="BLOGGER_PHOTO_ID_5521122993751423826" /></a><br /><div><br /></div><div>Enjoy!</div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com6tag:blogger.com,1999:blog-19720216.post-77795074751884123362010-09-25T17:09:00.009+03:002010-09-25T21:00:58.638+03:00Home Made Surge ProtectorAfter my <a href="http://blog.svilen.com/2010/09/petzl-tikka-plus-mod.html">Petzl Tikka upgrade</a> I am continuing with the electro stuff (my new-old childhood hobby).<div><br /></div><div>Two days ago a lightning stroke our neighbours, so it was time for all-in-the-house <a href="http://en.wikipedia.org/wiki/Surge_protector">Surge Protectors</a> so I went to the local hardware shop to buy some.</div><div>Unfortunately the cheapest ones costed 13-15$ which is pretty much for me as I needed at least 4 or 5. I already had connection-blocks and I had to add only the protection.</div><div><br /></div><div>Why not do it myself? Of course I will and it costed around 2$ per piece. What a bargain? Huh?</div><div>Yes, that it 2$ per piece. All you need is a proper <a href="http://en.wikipedia.org/wiki/Varistor">varistor</a> (in my case 20N391K) and put it into a nice plug.</div><div><br /></div><div>In short what you need is:</div><div>- a new Plug</div><div>- a varistor 250V, ~25ns (example: 20N391K)</div><div><br /></div>1) All you need.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6qFVCWx1QM0HbToQUnSLx7cNkIz32UEIJeLy-LOl_hlBARZIoSahzoQ1yH0OjjK9zP9i5WTks-9y_foWTgXEfP8bNzOyWowdIBOHBAeyPxn5kW-EnKaQqyYf4b_iSm__uAG_ghQ/s1600/DSC07678.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6qFVCWx1QM0HbToQUnSLx7cNkIz32UEIJeLy-LOl_hlBARZIoSahzoQ1yH0OjjK9zP9i5WTks-9y_foWTgXEfP8bNzOyWowdIBOHBAeyPxn5kW-EnKaQqyYf4b_iSm__uAG_ghQ/s400/DSC07678.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_552090899964268345" /></a><div><br /></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6qFVCWx1QM0HbToQUnSLx7cNkIz32UEIJeLy-LOl_hlBARZIoSahzoQ1yH0OjjK9zP9i5WTks-9y_foWTgXEfP8bNzOyWowdIBOHBAeyPxn5kW-EnKaQqyYf4b_iSm__uAG_ghQ/s1600/DSC07678.JPG"></a>1) Initial setup on the varistor inside the Plug.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnh9suG6bAYttM1ZR0M_fEQmPkiRTrmbZxprD-y9jL8UL3SvX4Q1ATjLg-wmxJcgaEFhjiT6seiSr21MsVs_j3vdtw0V5xvy_ImTlaNHZmyjnPV2aZUeebR40BH2EVxU8G7hebg/s1600/DSC07683.JPG"></a></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnh9suG6bAYttM1ZR0M_fEQmPkiRTrmbZxprD-y9jL8UL3SvX4Q1ATjLg-wmxJcgaEFhjiT6seiSr21MsVs_j3vdtw0V5xvy_ImTlaNHZmyjnPV2aZUeebR40BH2EVxU8G7hebg/s1600/DSC07683.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnh9suG6bAYttM1ZR0M_fEQmPkiRTrmbZxprD-y9jL8UL3SvX4Q1ATjLg-wmxJcgaEFhjiT6seiSr21MsVs_j3vdtw0V5xvy_ImTlaNHZmyjnPV2aZUeebR40BH2EVxU8G7hebg/s400/DSC07683.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5520909704793368274" /></a></div><div><br /></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMnh9suG6bAYttM1ZR0M_fEQmPkiRTrmbZxprD-y9jL8UL3SvX4Q1ATjLg-wmxJcgaEFhjiT6seiSr21MsVs_j3vdtw0V5xvy_ImTlaNHZmyjnPV2aZUeebR40BH2EVxU8G7hebg/s1600/DSC07683.JPG"></a>3) How I added this to a connection-block.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj4ZmDD16ddT8Q2lAt123QI_us0rHv0RYNLeI8hsPXpfR2vtVm9MP5mWS_w08l63yNZxbuU1jrHrKqmjQdGMIehdvgZmv7OWM8gez9LWTW5EsUj-KJpEKlmfewZoUhxmHGKkPa7nw/s1600/DSC07686.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj4ZmDD16ddT8Q2lAt123QI_us0rHv0RYNLeI8hsPXpfR2vtVm9MP5mWS_w08l63yNZxbuU1jrHrKqmjQdGMIehdvgZmv7OWM8gez9LWTW5EsUj-KJpEKlmfewZoUhxmHGKkPa7nw/s400/DSC07686.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5520909902859806258" /></a></div><div><br /></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj4ZmDD16ddT8Q2lAt123QI_us0rHv0RYNLeI8hsPXpfR2vtVm9MP5mWS_w08l63yNZxbuU1jrHrKqmjQdGMIehdvgZmv7OWM8gez9LWTW5EsUj-KJpEKlmfewZoUhxmHGKkPa7nw/s1600/DSC07686.JPG"></a>4) Plug is ready lets close it.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhaI8YTrUFtncCAFqOSMI8vldS8Ombi5JEgMgGZXSCZ0aeBHHIL9dTSy5uXnvjVOt3jGBYPdGXMn6An77H4TFUY4PgsdnbFGmxmtDnK81UrN9k2gu6DNP7pnpUWYzl404TF2TJRLg/s1600/DSC07687.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhaI8YTrUFtncCAFqOSMI8vldS8Ombi5JEgMgGZXSCZ0aeBHHIL9dTSy5uXnvjVOt3jGBYPdGXMn6An77H4TFUY4PgsdnbFGmxmtDnK81UrN9k2gu6DNP7pnpUWYzl404TF2TJRLg/s400/DSC07687.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5520909967082861170" /></a></div><div><br /></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhaI8YTrUFtncCAFqOSMI8vldS8Ombi5JEgMgGZXSCZ0aeBHHIL9dTSy5uXnvjVOt3jGBYPdGXMn6An77H4TFUY4PgsdnbFGmxmtDnK81UrN9k2gu6DNP7pnpUWYzl404TF2TJRLg/s1600/DSC07687.JPG"></a><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhycCDo7af8MYUV9fx6dJmag2vdYXCxt5oEw8VOs1QDTjLXSLYb9Pe5x-NyTlDKeBCuYubCqqkeNjTpW64W7y9iPUcn8CFt8fYCVftLfExg-9QJjGNyqtFA_NEG-cnL_pfR8czoFg/s1600/DSC07688.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhycCDo7af8MYUV9fx6dJmag2vdYXCxt5oEw8VOs1QDTjLXSLYb9Pe5x-NyTlDKeBCuYubCqqkeNjTpW64W7y9iPUcn8CFt8fYCVftLfExg-9QJjGNyqtFA_NEG-cnL_pfR8czoFg/s400/DSC07688.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5520910072164581890" /></a></div><div><br /></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhycCDo7af8MYUV9fx6dJmag2vdYXCxt5oEw8VOs1QDTjLXSLYb9Pe5x-NyTlDKeBCuYubCqqkeNjTpW64W7y9iPUcn8CFt8fYCVftLfExg-9QJjGNyqtFA_NEG-cnL_pfR8czoFg/s1600/DSC07688.JPG"></a>5) Plug is close and ready for some tests.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiirwMi1jjSzz3yxGtqBFVI7qc7V5QE3EJYsJeSNJwSYhvnJrBTw64bAmHiczQ0G0eIwEj_Zn4L-xhJUu1cQaO3kmtMxcs3Zsee9zGaWXICfaARmXcArZIV9AiZ2lhw6-3zTJcsKQ/s1600/DSC07690.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiirwMi1jjSzz3yxGtqBFVI7qc7V5QE3EJYsJeSNJwSYhvnJrBTw64bAmHiczQ0G0eIwEj_Zn4L-xhJUu1cQaO3kmtMxcs3Zsee9zGaWXICfaARmXcArZIV9AiZ2lhw6-3zTJcsKQ/s400/DSC07690.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5520910150983335602" /></a></div><div><br /></div><div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiirwMi1jjSzz3yxGtqBFVI7qc7V5QE3EJYsJeSNJwSYhvnJrBTw64bAmHiczQ0G0eIwEj_Zn4L-xhJUu1cQaO3kmtMxcs3Zsee9zGaWXICfaARmXcArZIV9AiZ2lhw6-3zTJcsKQ/s1600/DSC07690.JPG"></a>6) I decided to add some image so that I know which plugs are protected already.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEha2sFlBAdyzhFZVBMVi4zNGjiqT9gbvdOAJMxULXn5Y5QOVgcUdsXSPecWmjdeLP6Il3d8941IPGs9WuF4MrDtUtuSZqJ9LslYGFkPyKNbIIduM591thJjn-wjDpuEd5X8xG_NwQ/s1600/DSC07692.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEha2sFlBAdyzhFZVBMVi4zNGjiqT9gbvdOAJMxULXn5Y5QOVgcUdsXSPecWmjdeLP6Il3d8941IPGs9WuF4MrDtUtuSZqJ9LslYGFkPyKNbIIduM591thJjn-wjDpuEd5X8xG_NwQ/s400/DSC07692.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5520910231265165378" /></a></div><div><br /></div><div><br /></div><div>Nice job!</div><div>3 hours, no more than 10$ and all home connection-blocks are protected from lightning.</div><div><br /></div><div>Try it but be very careful.</div><div>You are working with 220V.</div><div>It can kill you if do not take precautions!</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com2tag:blogger.com,1999:blog-19720216.post-12988119059148062452010-09-12T00:46:00.008+03:002010-09-12T01:22:19.083+03:00Petzl Tikka Plus modLast week I was wondering if it's worth buying a new <a href="http://www.petzl.com/en/outdoor/headlamps/compact-tikka-2/tikka-xp">Petzl Tikka XP 2</a> headtourch.<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtRL9uxNWBnAXqImHS_8krgREK5Rg9EKfeYLC2ArugG4QNxCS8FGH155_vnvMcTcJGlqhm9xmlgHf0Lu2UaEPVImkA4YajOAnDqHyO5g2BCkvL9VWj4umwBcMI10MbjyDLyzkWFw/s1600/e99-pi_1.jpg"><img style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 320px; height: 320px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtRL9uxNWBnAXqImHS_8krgREK5Rg9EKfeYLC2ArugG4QNxCS8FGH155_vnvMcTcJGlqhm9xmlgHf0Lu2UaEPVImkA4YajOAnDqHyO5g2BCkvL9VWj4umwBcMI10MbjyDLyzkWFw/s320/e99-pi_1.jpg" border="0" alt="" id="BLOGGER_PHOTO_ID_5515776335714954466" /></a>So I decided that I need to see it live first and went to the local shop. Unfortunately I was badly surprised. This new Tikka was heavier, bigger and wasn't producing much more light than my old one - <a href="http://www.amazon.com/Petzl-Tikka-4-LED-Headlamp-E47P/dp/B0000950Q9">Petzl Tikka Plus</a>.<br /><br /><div>When I came back home I started reading forum about upgrading Tikka Plus and I saw that most people managed to change the LEDs with some new Ultra bright LEDs from Nichia (Japan) and the result was astonishing.</div><div>And as a ex-Technical university student I was eager to try this, too - ordered Nichia GS diodes from www.led-tech.de and started the test.</div><div><br /></div><div>Below I am showing some pictures taken during the switch to the new diodes.</div><div><br /></div><br /><div>1) Here are all the tools I've used and disassembled Tikka.</div><div><br /></div><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitYRAxVjfgYnOzAJMYY-G1cJEiI_uprckD6USm-02hIsT0mQoR-8DARJ6NqMRYXqrqG-OWUvvOiP1swtJhIaLQ1EEOUEg8S-2Pu9kkg5L1wpki2M1jmhCiChsIb146WAIf3n2q0A/s1600/DSC07652+copy.JPG"><br /><img style="cursor:pointer; cursor:hand;width: 320px; height: 166px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitYRAxVjfgYnOzAJMYY-G1cJEiI_uprckD6USm-02hIsT0mQoR-8DARJ6NqMRYXqrqG-OWUvvOiP1swtJhIaLQ1EEOUEg8S-2Pu9kkg5L1wpki2M1jmhCiChsIb146WAIf3n2q0A/s320/DSC07652+copy.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515778744030912258" /></a><br /><br /><div>2) Original Tikka PCB with one LED removed<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-jh4M6cgbl0_0l-oxtO82k-TEeyZE1foH-nMr4sO75BXHT6rbJ5BmqrXvqqbEpr-h6LcTRa2zVLmuF1X-eeRMTgOfxvMYut9WdtA5_egwal8YbN50LJQ-2Iimlp5oKMcb-JZ64w/s1600/DSC07653.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-jh4M6cgbl0_0l-oxtO82k-TEeyZE1foH-nMr4sO75BXHT6rbJ5BmqrXvqqbEpr-h6LcTRa2zVLmuF1X-eeRMTgOfxvMYut9WdtA5_egwal8YbN50LJQ-2Iimlp5oKMcb-JZ64w/s400/DSC07653.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515779341871145954" /></a><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQzuhL4umT0fBxgpszdZFczbQ-puEDepzvTK2QenbFsNErBMdL829hF-wzdlIUTFM3m8cSMGhz6Emcg5i6kiuG9UxR0mrzZDZ-M9gDm8pvhfQQpvOAfRouo80g45EU_cKSe5Lfvw/s1600/DSC07654.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQzuhL4umT0fBxgpszdZFczbQ-puEDepzvTK2QenbFsNErBMdL829hF-wzdlIUTFM3m8cSMGhz6Emcg5i6kiuG9UxR0mrzZDZ-M9gDm8pvhfQQpvOAfRouo80g45EU_cKSe5Lfvw/s400/DSC07654.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515780019310776018" /></a><br /><br /></div><div>3) All old LEDs removed.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixUx0JmMuEaf1EV3i1eL1qWXlR_msnXT_c_JSuQ5tT4Xqf3WDvA0lcvbs1jmFGUD-FEdiK5AeIPS8Vx9hd7PSeR1AQdoUdxN7r1uHYcnBC2nqHlvR13oU-tOp-ACF8zhh20ftfUQ/s1600/DSC07655.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEixUx0JmMuEaf1EV3i1eL1qWXlR_msnXT_c_JSuQ5tT4Xqf3WDvA0lcvbs1jmFGUD-FEdiK5AeIPS8Vx9hd7PSeR1AQdoUdxN7r1uHYcnBC2nqHlvR13oU-tOp-ACF8zhh20ftfUQ/s400/DSC07655.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515780168654498306" /></a><br /><br />4) Package from LED-TECH.de with the new diodes - Nichia GS.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPL5aW3CIiAm3Vq-2xncYFHJWznqCPt6xj1p_aPFIN4z1KMKKL7ioFVz9NmRH3JvezNlAl_Vbfch1OeaDjJpLRkG-hRe0ukL_6ibxPAvpV6Sle_HUBM3KCboH_iFvpVGbOwu1icg/s1600/DSC07658.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPL5aW3CIiAm3Vq-2xncYFHJWznqCPt6xj1p_aPFIN4z1KMKKL7ioFVz9NmRH3JvezNlAl_Vbfch1OeaDjJpLRkG-hRe0ukL_6ibxPAvpV6Sle_HUBM3KCboH_iFvpVGbOwu1icg/s400/DSC07658.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515780310846857778" /></a><br /><br />5) Petzl Tikka Plus PCB with Nichia GS diodes installed.<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9k3IY0SPEdxLgwLqIwO7j_tswR7Sv1tmZzq0jMqmjv_K1rasmdPqaBKSRrxT0CV2cPb4pI2rftaraU7aFAGBf4lWdJrGOh7mFRkjNLbwQ5Pzkqjr-sLy6a9jDeuG4ZSh97R8k6g/s1600/DSC07659.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9k3IY0SPEdxLgwLqIwO7j_tswR7Sv1tmZzq0jMqmjv_K1rasmdPqaBKSRrxT0CV2cPb4pI2rftaraU7aFAGBf4lWdJrGOh7mFRkjNLbwQ5Pzkqjr-sLy6a9jDeuG4ZSh97R8k6g/s400/DSC07659.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515780673987603426" /></a><br /><br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5DKO391Bm8RCMgM3nDtiWxmJjYUPTZxzXJsVsnNAr0Z2bI4GP7mfjLXqjneMgRkHlhmM4scQTXrIZVaGTACSObCIMluLqnSKX2RqcJHVzpwGHqX9wJe9iU9nBH3qz1mtGyw7U0A/s1600/DSC07660.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5DKO391Bm8RCMgM3nDtiWxmJjYUPTZxzXJsVsnNAr0Z2bI4GP7mfjLXqjneMgRkHlhmM4scQTXrIZVaGTACSObCIMluLqnSKX2RqcJHVzpwGHqX9wJe9iU9nBH3qz1mtGyw7U0A/s400/DSC07660.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515780755493433314" /></a><br /><br />6) Tikka Plus with Nichia GS (on the left) vs Tikka Plus with original diodes (on the right)</div><div>You can see that the GS is more warm and slightly better.</div><div><br /></div><div>*) I could also add that the batteries of the Tikka with Nichia GS were a little bit "exhausted" (I had only 3 new batteries, so I decided to put them on the Tikka Original)<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjoipQGNLDTS8N3bVCgecKQTHix5crpiD3uA_ez2tf3YuYUsRCrESwQl-v_0KjzGFDUQprkA1n-eZCsnMdU931sqUrYST7lHZA1FpmSyfastnZKoIDEXWfJ8NpdvqehsHgJA7yRw/s1600/DSC07661.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjoipQGNLDTS8N3bVCgecKQTHix5crpiD3uA_ez2tf3YuYUsRCrESwQl-v_0KjzGFDUQprkA1n-eZCsnMdU931sqUrYST7lHZA1FpmSyfastnZKoIDEXWfJ8NpdvqehsHgJA7yRw/s400/DSC07661.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515780937557296082" /></a><br /><br />7) Petzl Tikka - Nichia GS diodes vs Petzl Tikka - Original diodes<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSJV73ZIDM71O9zfUTFI3OOmfcrZs5l5mC9Q34bE35XBPs_rtXomx-OddFc-PgCQ_UcsQleuKGFkVtu7svt-j-baDwc_cleVzXr2nYweURuE0iA19Wp-TtKjt1mPSgOuzRM8OViw/s1600/DSC07662.JPG"><img style="cursor:pointer; cursor:hand;width: 400px; height: 300px;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSJV73ZIDM71O9zfUTFI3OOmfcrZs5l5mC9Q34bE35XBPs_rtXomx-OddFc-PgCQ_UcsQleuKGFkVtu7svt-j-baDwc_cleVzXr2nYweURuE0iA19Wp-TtKjt1mPSgOuzRM8OViw/s400/DSC07662.JPG" border="0" alt="" id="BLOGGER_PHOTO_ID_5515781031127348610" /></a></div><div><br /></div><div><br /></div><div>As a conclusion I could say only - TRY Nichia GS or Nichia DS LEDs!!!</div><div><br /></div><div>*) Nichia DS should be a little bit warmer than GS, but GS are brighter. Both are great! Do not hesitate to try the DS, too. Difference is really small.</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com2tag:blogger.com,1999:blog-19720216.post-9738149191612968572010-05-02T22:20:00.003+03:002011-02-02T01:36:46.236+02:00Google App Engine Twitter BotAfter I became familiar with Python and Google's hosting platform (called App Engine) I decided to write my first app for the platform.<div><br /></div><div>And here it is - a simple Twitter bot which get's shared posts with comments "#twitter" from your Google Reader Atom feed and posts them to your Twitter feed.</div><div><br /></div><div><a href="http://www.svilen.com/twitter.zip">Download it</a>, open <a href="http://code.google.com/appengine/docs/python/gettingstarted/">Python's App Engine docs</a>, <a href="http://code.google.com/appengine/docs/python/apis.html">Service APIs docs</a> and try yourself.</div><div>*) UPDATE (02 Feb 2011): Since Twitter discontinued the Basic API Access, I modified the bot to use the oAuth Twitter API</div><div>I also changed the shorten url service to http://bit.ly</div><div><br /></div><div>Take a look and change the following lines in twitter.py file accordingly in order to run the app successfully:</div><div><br /></div><div><div># First you need to create an app here</div><div># http://twitter.com/oauth or http://dev.twitter.com/apps/</div><div># and get the codes below</div><div>TWITTER_CONSUMER_KEY = 'YOUR KEY'</div><div>TWITTER_CONSUMER_SECRET = 'YOUR SECRET'</div><div># The next codes are found http://dev.twitter.com/apps/</div><div># right menu, after you clicked on the app</div><div>TWITTER_ACCESS_TOKEN = 'TWITTER TOKEN'</div><div>TWITTER_ACCESS_TOKEN_SECRET = 'TWITTER TOKEN SECRET'</div><div># bit.ly api keys found at: http://bit.ly/a/your_api_key</div><div>BIT_LY_USERNAME = 'YOUR USERNAME'</div><div>BIT_LY_API_KEY = 'YOUR API KEY'</div><div># Google reader feed URL</div><div># example is mine below</div><div>GOOGLE_READER_FEED_URL = 'http://www.google.com/reader/public/atom/user/07723902623423188282/state/com.google/broadcast'</div></div><div><br /></div><div><div><div>If you have questions leave your comments below. I will try to help you.</div></div></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-74686686289287557612010-05-02T21:49:00.003+03:002010-05-02T22:20:22.150+03:00Python 2.6 & Google App EngineSome of you may know that I am mainly developing on PHP (as a backend language) and MySQL database with different storage engines (<a href="https://launchpad.net/percona-xtradb">XtraDB</a>, InnoDb and <a href="http://www.primebase.org/">PBXT</a>).<div><br /></div><div>A week ago I decided to get involved more deeply into Python and Google App Engine platform. I was already looking into Python as a generic type language for my system administration needs which arised in the last two months.</div><div>I know that all (most of) sys-admins use Perl as it is their old-school tool-language, but I wanted something better with easier and cleaner syntax and flexible enough.</div><div><br /></div><div>So here came Python and it's <a href="http://docs.python.org/tutorial/">brief tutorial</a>. I must say it's fabulous and easy to understand.</div><div>I recommend you take a look at it (please read it carefully, there is nothing unnecessary written) and also watch some of the Google I/O talks of the Google Python gurus - <a href="http://python.org/~guido/">Guido van Rossum</a> (Pythons creator) and <a href="http://www.aleax.it/">Alex Martelli</a>.</div><div><br /></div><div><a href="http://www.youtube.com/watch?v=bDgD9whDfEY">Painless Python part 1</a> by Alex Martelli</div><div><a href="http://www.youtube.com/watch?v=y7vwZ20SDzc">Painless Python part 2</a> by Alex Martelli</div><div><br /></div><div><a href="http://code.google.com/appengine/">Google App Engine</a> is a new (to me) scalable platform for building web apps and I must say it's very easy for start. You don't have to think about software tuning, optimization, etc. Except of course the optimization algorithms and hints given from Google on how to build a successful app, which are easy to take in account. After you've become familiar with Python you may want to take a closer look at <a href="http://code.google.com/appengine/">App Engine</a> and the provided <a href="http://code.google.com/appengine/docs/python/gettingstarted/">Python APIs</a>.</div><div>Yes instead of software and a dedicated server you get an application storage space and a bunch of APIs. Pretty interesting approach for hosting from Google, but I must admit it is very conveninent. That way Google takes care about all software and service tuning, configuration, etc. and as a Developet you only have to ... DEVELOP. </div><div><br /></div><div>Here are some interesting talks about Google's App Engine:</div><div><br /></div><div><a href="http://www.youtube.com/watch?v=v1gTI4BOPUw&feature=channel">Python, Django and App Engine</a> by Guido van Rossum</div><div><a href="http://www.youtube.com/watch?v=Oh9_t5W6MTE&feature=related">Building Scalable Web Apps with App Engine</a> by Brett Slatkin (Google's App Engine main engineers)</div><div><a href="http://www.youtube.com/watch?v=tx5gdoNpcZM">App Engine Datastore Under the Covers</a> by Ryan Barrett (lead App Engine datastore)</div><div><br /></div><div>Enjoy!</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-74686711767763301182010-04-26T00:38:00.002+03:002010-04-26T00:41:26.548+03:00MySQL TunerFor those of you which does not have a clue how to optimize your MySQL machines, try <a href="http://blog.mysqltuner.com/">MySQL Tuner script</a>.<div><br /></div><div>I recommend it even to experienced guys.</div><div><br /></div><div>Hope Major Hayden will find a good follower who will continue the support of the script.</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-26030262549392661132010-04-25T11:06:00.003+03:002010-04-25T11:11:55.320+03:00NoSQL fashionI am sure some of you have already heard about NoSQL and available solutions like MongoDB, Cassandra, etc.<div><br /></div><div>Yes, everything came back from Google's Bigtable and the ideas standing behind it.</div><div>And if you want to learn more go watch the <a href="http://www.youtube.com/watch?v=z-0uO9EgI2o">Guide to NoSQL from Brian Aker</a> and <a href="http://www.youtube.com/watch?v=zAbFRiyT3LU">part 2</a>.</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-82842260543564860512010-04-25T01:23:00.001+03:002010-04-25T01:24:41.607+03:00Performance toolToday I went over <a href="http://poormansprofiler.org/">Poor man's profiler</a>.<div>A simple & great tool to see what's going on your server.</div><div><br /></div><div><a href="http://poormansprofiler.org/">Go try it</a>.</div><div><br /></div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0tag:blogger.com,1999:blog-19720216.post-51982744144881293352010-03-03T00:38:00.003+02:002010-03-03T00:56:44.396+02:00XMPP Web ChatRecently I had to develop a scalable web chat which should be compatable with normal chat software like Aduim, Miranda, etc.<div>I decided to use a XMPP server and I liked Brad Fritzpatriks <a href="http://danga.com/djabberd/">Djabberd</a> because it's easy scalable, memory optimized (300k+ connection in only 1GB RAM), written in Perl (one of the languages I am familiar with) and easily customizable.</div><div><br /></div><div>All went okay during the tests with Adium and PSI and I managed to complete the custom modules in just two days.</div><div><br /></div><div>But then there was the last part - web chat system integration. I stoped my attention to <a href="http://blog.jwchat.org/jwchat/">JwChat</a> looks nice and has a Facebook alike bar aka iJabBar.</div><div><br /></div><div>And here begins the Hell ...</div><div><br /></div><div>All web based XMPP chat clients use so called HTPP-Binding ot Polling for communication (aka <a href="http://xmpp.org/extensions/xep-0124.html">BOSH</a>) to connect to Jabber server and Djabberd has no plugin for that. Sure at first I thought I can write one but ... isn't there anything already done? ... and no, there is nothing.</div><div><br /></div><div>I started searching for a compromise solution and I went over <a href="http://blog.jwchat.org/jhb/">JabberHTTPBind</a> and <a href="http://code.stanziq.com/punjab/wiki">Punjab</a>. Both unreliable and buggy. Both tested on Mac OS X and Linux. At first I tried to fix JabberHTTPBind which is written in Java, but unfortunately I am not so experienced in Java programming to fix everything and XML parsing bugs left.</div><div>Punjab on the other hand is written in python which I am familiar with but after 4 hours of debugging and trying to fix it's XML parser, too, finally I gave up.</div><div><br /></div><div>Now, after posting this I will go and write a working XMPP BOSH script using libevent and based on <a href="http://code.google.com/p/phpdaemon/">phpDaemon</a> (asynchronous PHP framework). I am starting to think like Brad (formerly SixApart's guy and now working for Google) - if there is no solution or everything out there just sux, do write your own and do it well.</div><div class="blogger-post-footer">Atom Feeds <a href="http://blog.svilen.com/atom.xml">http://blog.svilen.com/atom.xml</a></div>Svilen Spasovhttp://www.blogger.com/profile/13024634252981285729noreply@blogger.com0