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-   -   2x bridged TA2022 180w x 2ch (http://www.diyaudio.com/forums/chip-amps/218652-2x-bridged-ta2022-180w-x-2ch.html)

2ndwind 28th August 2012 02:55 AM

2x bridged TA2022 180w x 2ch
 
Ordered the board fully assemble from a seller on ebay. It recommends using a AC22v-0-AC22v output transformer with more than 350va. I have a 22v + 22v 160va toroid transformer. My question is will my 160va TT power this amp board? At least until I get bigger transformer of course. Would there be any resulting effect on the 160va transformer itself?

I assume the result will be the chip amps not producing as much power than if it had sufficient VA from the transformer, also I'd expect a 160va transformer to run hot in this application being fully taxed at 50% volume. Is that an accurate assumption?

AndrewT 28th August 2012 10:50 AM

The amp will run just fine.

BTW,
you have no hope of getting 180+180W from that chip, even if you used a 500VA transformer
It's specified @ 90W into 4r0 with +-31Vdc and 60W into 8r0 from +-35Vdc

2ndwind 28th August 2012 01:15 PM

This is a two chip amp. One chip bridged per channel. 180w would maybe be reach at the maximum voltage of 36v, but I don't plan on pushing it that far. 22v should put it over 100w per chip-bridged and that will be plenty for now.

Thanks for the reply, I'm more confident the 160va transformer I have will work fine for now. I should at the least get me though testing.

Atjan 30th August 2012 11:46 AM

I've got a Topping TP60 which uses the TA2022 chip. The unit uses 2 transformers and weighs about 5kg. I know this is pretty rough, but based on the typical weight of transformers, I'm guessing their VA rating is around 225VA. The manufacturer claims 50W/channel into 8 Ohms and 80W into 4 Ohm.

Topping TP60 Tripath TA2022 50WPC (80WPC 4 Ohm) Amplifier 310-326


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