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Transformer for tripath Amp

post #1 of 17
11/12/09 at 10:16pm
Thread Starter 
Hello friends of the DIY forum, i'm thinking about doing my first DIY project and i need your opinion and advise on a power transformer for these Tripath Amp Kit, thanks alot.

100W x2 Class T Digital Amplifier Board Tripath TA2022 - eBay (item 230398703209 end time Nov-19-09 00:06:59 PST)
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post #2 of 17
11/12/09 at 10:36pm
Tripath - Class T Amp

Look an ye shall find...
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post #3 of 17
11/12/09 at 10:51pm
Hey JulioCat2,

I purchased a Hlly t-amp ta2022 and i have to say that I was severely disappointed. The sound coming from them was muddled, unfocused and almost unlistenable. My $50 amplifier from dicksmith sounded much better. There was also a loud hissing noise which some people on diyaudio attributed to the pcb layout. Now i'm not saying that the one that you intend on buying will be the same but i just wanted to share my experience with that chip.

I haven't heard the other tripath chips but many of the positive reviews are of the lower watt ones e.g. ta2024.

I purchased the ta2022 on the basis of reviews read about the tripath 2024 and thought that it would be similar but with more power. Unfortunately I don't think that is the case.

Hopefully your experience with the chip is better than mine if you choose to go ahead.

The one that i bought came with a 150W +/- 30V torroid tranny in case you were wondering.
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post #4 of 17
11/13/09 at 12:49am
the muddled sound is probably not the TA2022's fault. there is a input stage on the HLLY board, with an opamp of some kind, probably used for pre-amping. That board might be intended for low signal source such as a MP3. I suspect the input stage opamp might be "severely cheap" which severely worsens the overall SQ.

The complain on Class-T SQ is usually "great detail but sharp and edgy", not "muddled".
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post #5 of 17
11/13/09 at 1:04am
Thread Starter 
I think i need to be more specific, i'm a totally newbie, could you please send me some page of a power transformer for that amp kit???

Thanks a lot.
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post #6 of 17
11/13/09 at 1:26am
Antek - AN-2225
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post #7 of 17
11/13/09 at 3:10pm
Thread Starter 
Thanks for the info.

Maultar i buy a tripath Kingrex QS-01 amp recently and it's based on the same ta2022 chip and it sound marvelous, great bass defined highs and a the tube sound of kingrex amps, so i agree with audiocats maybe the Hlly amps it's not well made (the kingrex cost almost 800), i can se no opamp on the pictures of the hlly 90 amp but the kit i intend to buy does have a Nec5532 in a socket so it's perfect for replacemant.
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post #8 of 17
11/14/09 at 12:26am
Thread Starter 
I think i have found the correct transformer for these little amp

150W 22-0-22V+12V Ultra-Thin Toroid Power Transformer - eBay (item 300364701166 end time Dec-07-09 04:59:27 PST)

I'm i right??? Thanks
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post #9 of 17
11/14/09 at 11:42am
If you don't need the 12v winding, go with the Antek and save yourself $40.00 on the shipping. Anteks are great and he does a great job serving the DIY market.
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post #10 of 17
11/14/09 at 12:55pm
Thread Starter 
So then i don't need to feed 12 and 24 volt to the kit??? as i said i'm a totally newbie
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post #11 of 17
11/14/09 at 1:35pm
Ooops, sorry my bad. I should have looked at the amp itself, I saw a post for the Antek and assumed. Anyway if you want to go with the one you found on eBay it will do the job, can't speak to the quality as I have not used them. You can get a 22v and a 12v traffo from Antek for $39.00 and their shipping is way less and I can personally vouch for the quality as I use them all the time. YMMV
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post #12 of 17
11/14/09 at 3:17pm
Quote:
Originally Posted by JulioCat2 View Post
I think i have found the correct transformer for these little amp

150W 22-0-22V+12V Ultra-Thin Toroid Power Transformer - eBay (item 300364701166 end time Dec-07-09 04:59:27 PST)

I'm i right??? Thanks
Where are you located in the world? This transformer is a 220V primary.
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post #13 of 17
11/14/09 at 4:03pm
Quote:
Originally Posted by cobaltmute View Post
Where are you located in the world? This transformer is a 220V primary.
Great catch...
Man o man, two gotchas in one thread! Gotta stop posting after a rough Friday night out
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post #14 of 17
11/14/09 at 5:06pm
Thread Starter 
Thanks a lot friends. I'm from Mexico, so i think i'll buy the 2 trafos one 12 v and one 24v from Antek, i'm going to use the other 12V out to a speaker protection kit.

Another question, the 24 V trafo has 2 24 V outputs, so it has 2 24v-0 outputs, so how does the transformer must be coneceted to the amp if it has 24v-0-24v.

Yes i know, i'm a total joke DIY.
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post #15 of 17
11/16/09 at 12:39pm
Thread Starter 
Plase i need your help to be ready to go on these kit.
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