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Old 14th March 2010, 06:51 AM   #1
sled108 is offline sled108  United States
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Default Tripath EB-TA2022 Board

Has anyone seen These Boards? It says Tripath TA2022, but it's way more than the EB-TA2022 that I've found...What is it? And, who Makes it?...

TRIPATH digital power amplifier TA2022 2x90W - eBay (item 310205275166 end time Mar-14-10 12:00:03 PDT)
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Old 14th March 2010, 11:18 AM   #2
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Quote:
Originally Posted by sled108 View Post
What is it?
A TA2022 board with power supply, output protection relay, and input buffer...... all on one PCB.

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Originally Posted by sled108 View Post
And, who Makes it?...
The Chinese.

I think the bigger question is; was it designed properly and does it hiss like an angry cat?
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Old 14th March 2010, 05:25 PM   #3
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I'm taking the plunge and building one of these. Anyone know of a source for a 2x24v (300W?) + 1x12v (1A) transformer?
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Old 15th March 2010, 08:19 AM   #4
authlxl is offline authlxl  China
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Default Is ther hiss like angry cat?

Ha ha ha,laugh to death!!!


Quote:
Originally Posted by sled108
What is it?

A TA2022 board with power supply, output protection relay, and input buffer...... all on one PCB.


Quote:
Originally Posted by sled108
And, who Makes it?...

The Chinese.

I think the bigger question is; was it designed properly and does it hiss like an angry cat?
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"I've got this thing that I consider my only art of ****ing people over." - Modest Mouse


when hiss out like angry cat there are must lots of problems with PCB route.especial in SMPS+CLASS T topic,the background noise should very low,It will larger when parts position or PCB route no right.

Many people (include chinese)feel easy to build a class D or T switch amplifier,but I think "Innocence Abroad “,professional development
engineer never say easy ,try and try ,more and more time revise,sound will better,the demo board out of "hi-fi",only toy.

Last edited by authlxl; 15th March 2010 at 08:33 AM.
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Old 15th March 2010, 08:55 AM   #5
authlxl is offline authlxl  China
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Our new TA2022+SMPS board debuging!this is first version,there also have low hiss noise now,we have jumped some parts,lower noise still can be heard by high sensitive tweeter.

We have to revise the second version for better parameters.
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Old 15th March 2010, 11:44 AM   #6
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Originally Posted by authlxl View Post
Our new TA2022+SMPS board debuging!this is first version,there also have low hiss noise now,we have jumped some parts,lower noise still can be heard by high sensitive tweeter.

We have to revise the second version for better parameters.
Nice....

Why are there 4 output inductors?

I don't think you will ever completely get rid of that little bit of hiss; it's just the nature of these Tripath IC's.
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Old 15th March 2010, 11:56 AM   #7
authlxl is offline authlxl  China
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We use 4nd LC filter,for get good sound,I think if you devide two gnd and use special route ,hiss will not heard.
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Old 18th March 2010, 11:50 AM   #8
authlxl is offline authlxl  China
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Ok!I found the problems today,angry cat run away! hiss from high sensitivity tweteer very low,when I plcae my ear on it I only heard very low white noise.EB-ta2022 schematic have problems.
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Old 18th March 2010, 01:58 PM   #9
srinath is offline srinath  United States
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OK so your ebay kits are the low noise version now ?
Please post a link.
Thanks.
Srinath.
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Old 18th March 2010, 02:57 PM   #10
authlxl is offline authlxl  China
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Default TA2022 Angry cat run away!

I found VN10 is so important for this amp,noise always come from here.EB-TA2022 may not attention to this question,this question isn't linear or switch supply,key point is voltage,PCB route also important,I 'm not draw along with TRIPATH EB-TA2022,We haven't ebay shop,if guys have other question pls send mail to me,my mail:authlxl@gmail.com

I have finished the first version, found some question and revised it .the second version will debug next weekend,We believe it will work well at that time.

Fixed specification (tested):

POWER OUT:2100W/4Ω/1%THD+N,285W/4Ω/0.1%THD+N
SENSITIVITY:0dB
INPUT IMPEDANCE:10KΩ
POWER SUPPLY:90-265vac 50 OR 60Hz (T4A FUSE INSIDE)
FREQUENCY RESPONSE:20-20KHz 1dB
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Last edited by authlxl; 18th March 2010 at 03:27 PM.
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