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Class D Switching Power Amplifiers and Power D/A conversion

Class t-amp-2020 Kit - Check it!
Class t-amp-2020 Kit - Check it!
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Old 26th November 2006, 11:25 PM   #121
v-bro is offline v-bro  Netherlands
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Join Date: May 2006
Originally posted by Jorge
Have you see the 41Hz audio site?


They have 3 T amp kits.
They have a lot more now!

I use an AUDIODIGIT MC4x100 and have eight 41hz.com AMP32's. Both very nice amps, but the AUDIODIGIT sounds a bit dull, maybe the input caps should be changed, dunno. But that AMP6 seems like a very good deal to me... especially for someone with little soldering experience...

Here's a link to some pictures...

I'm doing some A/B testing on three of my AMP32's with different caps...nice that Jan added through hole inputcap PCB pads (and smd!)
on this tiny board.. the build went fairly well (only one of six I made doesn't want to sing.. )

The sound is most rewarding afterwards!
Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
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Old 27th November 2006, 12:15 AM   #122
psgary is offline psgary  United States
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Join Date: Oct 2006
Default Thanks, lousymusician

I just want to be sure I fully understand, even though you were clear in your comments.

From your notes, this is what gathered I will need to make the 2020 amp from Autocostruire:

- basic module
- power supply
- transformer
- speaker posts
- case

The transformer doesn't seem that expensive from Autocostruire and I'm concerned about matching the right one to the unit. It seems like it might be safer to go with theirs. But I'm open to suggestions.

Thanks for your input on this.
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Old 27th November 2006, 12:15 AM   #123
psgary is offline psgary  United States
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Join Date: Oct 2006
Thanks, Nuuk. Your site is very helpful and I will check it out thoroughly. I'd seen it before but missed some sections. Very helpful and most appreciated.
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Old 2nd August 2007, 02:55 AM   #124
gychang is offline gychang  United States
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Join Date: Feb 2005
Location: Davis, California
Originally posted by starn02

And all that without an enclosure. They did not show any influence even when sitting one beside the other for comparisons ... so my opinion is that the EMI problem is not so much a problem.
If you use a metallic enclosure then ...

Any recommendation on which enclosure?, anyone?

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