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Class D Switching Power Amplifiers and Power D/A conversion

SureElectronics TPA3123
SureElectronics TPA3123
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Old 28th February 2010, 05:12 PM   #1
e_fortier is offline e_fortier  Canada
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SureElectronics TPA3123
Default SureElectronics TPA3123

Hi Guys,

Has anyone purchased and tried this bords from Sure, it is based on TI model TPA3123. If so any comments...

2*25W @4? TPA3123 Class-D Audio Amplifier Board on eBay.ca (item 110497396432 end time 22-Mar-10 03:54:53 EDT)

Regards,
Eric
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Old 1st March 2010, 09:44 PM   #2
e_fortier is offline e_fortier  Canada
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SureElectronics TPA3123
BUMP.

Should I understand that nobody has worked with this IC or that the sound from TI chip are not good ?

Regards,
Eric
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Old 1st March 2010, 11:57 PM   #3
theAnonymous1 is offline theAnonymous1  United States
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I've used a couple of these low power TI class-d chips. I think they sound just fine; but I'm not a critical listener. I have a pair of BTL TPA3122D2 powering my mains right now (PhaseTech PC80).

I'm not a fan of SE outputs through output capacitors though. For the price of this board I would just get a low power Tripath amp.
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Old 30th June 2010, 07:32 PM   #4
lq_sunshine is offline lq_sunshine  Germany
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I bought one of these amps and the have a very audiophile sound (the thd is very low when operated below 3 W @ 8 Ohm).I couldn believe.
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Old 20th May 2011, 10:21 AM   #5
Rikdee is offline Rikdee  New Zealand
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Do these boards have any fuses on them? If not, what size fuse should i have to protect the board from shorting out?
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Old 20th May 2011, 11:26 AM   #6
lost eden is offline lost eden  United Kingdom
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I bought one of these to replace the TA2024 2x15W board in my first boombox build, with the intention of getting more volume from it, but have yet to properly test it. TBH I think 50W is actually too much for the enclosure & it'll just rattle apart if I crank it... It's certainly not an audiophile testing environment anyway, a pair of car speakers in a flightcase on the beach!
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Old 20th May 2011, 07:05 PM   #7
becki200 is offline becki200  Germany
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Didnt buy the 2*25 Watt, they also sell a 2*8 Watt version with the same chip. And they sound good, yes. And they are very very cheap
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Old 20th May 2011, 07:47 PM   #8
kec is offline kec  United States
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I've had my TPA3123 for a year or so. Sounds excellent to me.
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Old 21st May 2011, 01:37 AM   #9
macky is offline macky  Philippines
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me too! here's my build: http://www.diyaudio.com/forums/class...proto-amp.html
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Old 4th September 2011, 01:16 PM   #10
lossfound is offline lossfound  United States
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Not a lot of talk about the TPA3123 boards here so I will throw in my two cents. I have one of the Sure 2x"25"w TPA3123 boards, have had for nearly a year. I've only run this board so far with 12V power supplies. It sounds OK, but I don't know why you would choose this board over Sure's TA2024 board or similar. The 2024 sounds markedly better side-by-side on the same supply and costs a bit less. The TPA3123 board is noticeably harsher and hashier in the treble on most speakers than the TA2024 board, at least when running on 12V, and at that voltage it seems to offer no more power on tap than the 2024.

I recently picked up the Meanwell 24V/6A supply and one of Sure's TK2050 boards, and I'll be trying the TPA3123 board briefly on that supply to see if it does any better. But given the THD figures on the TPA3123 board at full "rated" power, again, if you were shelling out for a bigger supply I don't know why you wouldn't just go straight for the TK2050.

I had hoped the TI chips might be a step forward from the Tripath stuff since, who knows, the Tripaths might eventually become scarce at some point. So far, at least to my ears, they are actually a step backward.
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