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Old 15th April 2011, 11:37 PM   #1751
Salas is online now Salas  Greece
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Quote:
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my first post at DIYaudio
Amplifier on 2xtda7294 and power supply on IR2153.

I love traaaance
Welcome to the forum. You could post bigger than thumbnails though. Loving trance the kaZantip style parties?

*medium size ones you changed look better. Cool decoration.
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Old 16th April 2011, 07:15 PM   #1752
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Hi! This strange soundcard i find on my work
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Old 16th April 2011, 08:11 PM   #1753
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interesting, I see a creative chip and the national chip... can this possibly be hooked up to ordinary amped pc speakers without damage?
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Old 17th April 2011, 04:44 AM   #1754
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Default LM3886-To-STK Retrofit

Hi Guys, a solder joint on the muting resistor in the right channel of my LM3886-to-stk retrofit board in my Technics SA-350 popped loose and since I had the unit open, any way, and have a new Canon A430 to take detailed pictures with, I decided to go for it and post some more detailed pictures of the board. I'm still planning on having FAR Circuits run some of these retrofits and some simplified, low cost, VinyLiberator preamp boards late summer or early fall, when my finances are better.
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File Type: jpg LM3886-stk retrofit 1.jpg (688.1 KB, 1684 views)
File Type: jpg LM3886-stk retrofit 2.jpg (700.3 KB, 1465 views)
File Type: jpg LM3886-stk retrofit 3.jpg (658.9 KB, 1290 views)
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Old 19th April 2011, 07:08 AM   #1755
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Default At Home

Here are a couple shots of the retrofit, installed in the Technics SA350. It's looking a little better, now that I've cleaned off the excess thermal compound and tidied up the input circuit!
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File Type: jpg LM3886-stk retrofit home 1.jpg (512.3 KB, 1108 views)
File Type: jpg LM3886-stk retrofit home 2.jpg (694.2 KB, 357 views)
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Old 19th April 2011, 07:19 AM   #1756
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That little heatsink for two 86es scares me... Nice retrofit, now to get you to start etching some boards
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Old 19th April 2011, 07:51 AM   #1757
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Default Hedged My Bet

Quote:
Originally Posted by digits View Post
That little heatsink for two 86es scares me... Nice retrofit, now to get you to start etching some boards
Absolutely! It even idled quite warm on the stock +/- 42V rails, but I hedged my bet by going to a pair of salvage 123VA toroids, upping the stock 8200uf (I think) filter caps to 15,000uf, and ending up at a nice, stiff +/- 33V. I play it loud, but bedroom use and a lossy crossover, with series summing resistors in the subwoofer channel, keep the amps out of thermal shutdown. It has the sound that LM3886's are famous for!

I'm lazy, have an ego complex, and want to make boards available for other DIY retrofitters, so I'll have FAR Circuits do 'em in a few months, then blank boards will be in FAR's catalog in less than a year from my initial order! My design is to have snubbers for remote power supply operation and extra pads in the input area for subsonic/ultrasonic filter components.
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Old 19th April 2011, 01:01 PM   #1758
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Not a chip amp but does have a chip...
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Old 19th April 2011, 04:06 PM   #1759
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Lol, that rev C is a way underutilisation of that carver case.
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Old 19th April 2011, 04:17 PM   #1760
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Lol, that rev C is a way underutilisation of that carver case.
Only if the meters are not hooked up! If they are, it's completely awesome!
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