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Old 4th November 2007, 10:34 PM   #1
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Default It's ALIVE!!! 3886 Amp

My first chipamp is going!

The poweramp and power supply modules are kits from EZAmps.com. I can't praise their kits more highly. There is a premium compared to the prices of other kits, but all of the electronic parts are included, even the heat sinks. IMO, this was key for me to complete my first effort.

I've had it going in a limited fashion for a few weeks or so, but I chased down the final 2 gremlins (hopefully).

1. The turn on thump kept popping fuses like crazy. I solved that with the Loudspeaker Protect Circuit from diyclub.biz. This thread was very helpful in connecting the board.

2. It was humming...a lot! The issue was my source (currently the only source I have). It is a laptop. It didn't occur to me that the AC power supply could introduce ground loop issues. Once I figured that out, it sings like a bird when it is running on battery.
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Old 4th November 2007, 10:35 PM   #2
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Default Another Picture

Here is another glamour shot.
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Old 5th November 2007, 12:41 AM   #3
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Looks nice and clean.

You can try a ground loop isolator.

How do you like the sound?
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Old 5th November 2007, 01:28 AM   #4
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So far, I'm very pleased with the sound. Currently it is getting it's source from a laptop sound card (not the best, I know), and it's feeding a pair of Paradigm Atoms.
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Old 5th November 2007, 01:59 AM   #5
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Might want to consider building a USB dac to feed it. What I'm seriously thinking of doing as A LOT of my music is ripped to my PC. Just easier to manage in digital form. Of course I rip it with Lossless FLAC.
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Old 5th November 2007, 02:03 AM   #6
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That is the direction I'm heading in. I've been considering both the USB DACs as well as the Squeezebox.

I agree that the future is a server based home entertainment system.

Also, sadly, I'm starting at zero media after a fire caused us to loose countless CDs and LPs (as well as ALL my hardware). So, I might as well rip and backup like CRAZY!
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Old 5th November 2007, 02:12 AM   #7
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Yeah currently I'm thinking about Peter Daniels, TwistedPear, or the DDDAC. Not sure which yet. The DDDAC is the most expensive but a lot of people seem to like it a lot.
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Old 5th November 2007, 05:25 AM   #8
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Hi,

We are in a same way..... I'm planning about music server too.

I was planning to build ecdesign extreme nos dac and already have 8 pcs TDA1541.. this is not a simple task but worthy.

salesmonster and dougie085... congrats! for your first amps.

Regards
Jopie
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