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Old 12th January 2010, 04:29 PM   #21
rhing is offline rhing  United States
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I have a modified Sure TA2024 board and I also have a modified Sonic Impact Gen 2 T-amp based on the TA2024 amp chip. I believe the TA2020 will provide an extra bit of headroom over the TA2024. I am sure that although they both have that Tripath house sound, both have their individual flavors. However, the general consensus seems that T-amps based on the TA2020 are better (e.g., Charlize, Charlize II, 41Hz Amp 6 and Amp 6 Basic, King Rex, etc.). I plan on trying Arjen's TA2020 module.
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Old 14th January 2010, 10:39 PM   #22
rhing is offline rhing  United States
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Quote:
Originally Posted by smokinghot View Post
Opinions wanted...

Better to go with the Mk2 or the Mk3...?

Is it just me, or doesn't the Mk2 seem to have better numbers when compared to the Mk3.

TIA

Apparently, there is a Mk2 and a Mk3 version of Arjen's TA2020 T-amp module. According to the eBay listing, the improvements over the Mk2 PCB are:
  • Bigger board size for more space to replace components
  • Bigger output coils, with Micrometals T68-1 Torrodial core for a much improved transient response
  • Signal lights for power and overload are separately connected with connectors (included)
  • AC and DC power input supported (rectifier onboard)
  • Copper mounting studs for easy mounting in the housing
The bigger output coils alone would be worth the extra cost for the Mk3 PCB.
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Old 15th January 2010, 12:23 PM   #23
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Quote:
Originally Posted by rhing View Post
Apparently, there is a Mk2 and a Mk3 version of Arjen's TA2020 T-amp module.
Not sure if this was directed at me or not, but I followed the posted link on the second page. That Mk3 is based off the TA2024.
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Old 15th January 2010, 12:41 PM   #24
rhing is offline rhing  United States
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I posted the information for you and anyone else who is interested in the new TA2020 amp.

I don't like to post links to eBay listings, because when the item expires, it turns into a dead link, but here is a link to Arjen's Mk3 TA2020 amp:

New MKIII Tripath TA2020 PCB 25watt Class-T amplifier - eBay (item 260537132829 end time Jan-22-10 19:58:51 PST)
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Old 15th January 2010, 02:29 PM   #25
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I for one am stumbling along at best with info regarding T-amps, and appreciate your guidance.

Honestly... when the MkIII was mentioned eariler I didn't realize that there were two different chips carrying that same title. Nobody's mistake other than my own, but now that Arjen's Ebay site is back up, it's easy enough to see the correlation.. Unfortunately the TA2020 MkIII most likely would have suited my needs more appropriately. Fortunately Arjen's kits are so well priced, I'll most like end up picking up that Mk3 as well.
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Old 15th January 2010, 05:01 PM   #26
msj965 is offline msj965  United States
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Default possibility of modding mkII?

Hello Masters,
Just wanna ask this Q's regarding MKII 2020 is there any one modded this amps before and what did they do to improved the sound,clarity of this amps.
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Old 15th January 2010, 07:41 PM   #27
gfiandy is offline gfiandy  United Kingdom
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Smokinghot:- I am not sure these amplifers are a good choice for speaker testing. I think that they have quite high output impedance which tends to interact with the speaker inductance causing frequency response variation. Typically they roll of at high frequencies. This may lead to inacurate measurements of the speaker if you are then going to use it with a low output impedance amplifer.

You might be better off with a class AB chipamp kit such as a LM1875.

I am not certain on this so perhaps someone with a bit more experience of these amplifers could clarify if they are suitable or not.

Regards,
Andrew
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Old 15th January 2010, 08:39 PM   #28
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Quote:
Originally Posted by gfiandy View Post
I am not sure these amplifers are a good choice for speaker testing. I think that they have quite high output impedance which tends to interact with the speaker inductance causing frequency response variation. Typically they roll of at high frequencies.
That actually explains some things...lol. I have a co-workers Trends in my possession, and was trying it out with my rig. It did exactly what you're describing on the top end. I was blaming it on my temp set-up. Thanks for the clarity.

Quote:
You might be better off with a class AB chipamp kit such as a LM1875.
Thanks, I'll look into that as well....
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Old 18th January 2010, 12:33 PM   #29
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Thanks but seems the arjen is the way to go
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Old 31st January 2010, 04:38 AM   #30
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There seems to be some confusion here, there are MkII and MkIII versions of Arjen's TA2024 and TA2020 board (and I'm sure there were MkI too ;-)). I've personally bought several of his MkIII TA2020 for gift making.
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