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Class D Switching Power Amplifiers and Power D/A conversion

Sure Electronics AA-AB32313  2x400
Sure Electronics AA-AB32313  2x400
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Old 28th September 2017, 07:19 PM   #231
denbret is offline denbret  Canada
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Quote:
Originally Posted by selwe View Post
Is here anybody who tried AA-AB32313 / WONDOM AB23251V120
against
Hifimediy T4 / T3S
?
I had the T4, the sound is aggressive and I have now the 2x400w and no comparison.
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Old 29th September 2017, 08:58 PM   #232
selwe is offline selwe
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Quote:
Originally Posted by denbret View Post
I had the T4, the sound is aggressive and I have now the 2x400w and no comparison.
Thanks for sharing this useful info
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Old 14th November 2017, 06:31 PM   #233
clawmd is offline clawmd  United States
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Default PSU

Dose anybody have a recommendation for a small form factor SMPS. An enclosed MeanWell SMPS is huge, requiring a very large case to fit both the amp and the PS. MeanWell makes A number of models with an "open Frame" that are much smaller. Would one of these work?
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Old 30th November 2017, 07:44 PM   #234
Cantunes is offline Cantunes  Brazil
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Location: Rio de Janeiro
Hello everyone, I found these cards on Aliexpress. Are they Sure Originals?

I have seen other cards the same as Sure, but they are offered by the name WONDON.

I was interested in buying, but I'm afraid of being fake.

Classe D amplificador de potencia digital de alta potencia terminou bordo febre canal 2 500 w + 500 w T Amp estagio casa em Circuitos integrados de Componentes Eletronicos & Suprimentos no AliExpress.com | Alibaba Group
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Old 30th November 2017, 09:14 PM   #235
JohnnyInBris is offline JohnnyInBris  Australia
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I purchased AB32313 from ebay seller sure-hifi and it's advertised as wondom. The ebay listing shows the business as sure electronics
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Old 30th November 2017, 09:28 PM   #236
Cantunes is offline Cantunes  Brazil
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Quote:
Originally Posted by JohnnyInBris View Post
I purchased AB32313 from ebay seller sure-hifi and it's advertised as wondom. The ebay listing shows the business as sure electronics
Thank you Johnny! Now I feel more secure.
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Old 30th November 2017, 11:10 PM   #237
Frabor is offline Frabor
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Default Ali supplier, Power supplies and second revision

Cantunes: The board look original, even to small levels on the silkscreen, so I would say that they are good. It seems that there is a rev2 of the AB32313, so make sure that you are getting the new one.

strongbow60: Looks like yours is the new revision/
`
clawmd: i have the AA-AB3151 1x500W version of the board and I am tunning mine with a minidsp and HLG-150H-36 set at 40V. I run tests with a bigger power supply and with test tones at 1000Hz at the fill .9 Volt output of the minidsp, the amp was consuming about 3 Amps. , so that power supply was enough. If you want an open frame look in CNC supply shops for 48 Volts power supplies.

I decided to use two of the the AA-AB3151 1x500w modules and two of the HLG-150H-36 to create a dual monoblock system. If you run the numbers, you can see that costwise is basically the same price as the AB32313.
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Old 1st December 2017, 09:23 AM   #238
Cantunes is offline Cantunes  Brazil
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Quote:
Originally Posted by Frabor View Post
Cantunes: The board look original, even to small levels on the silkscreen, so I would say that they are good. It seems that there is a rev2 of the AB32313, so make sure that you are getting the new one.
Thanks!
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Old 3rd December 2017, 12:15 PM   #239
hopkins is offline hopkins  France
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I tested the Aa-ab32313 and while it is quite good I did not find it better than the Hypex Ncore which have a more refined sound IMO.
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Old 3rd December 2017, 01:59 PM   #240
ICG is offline ICG  Germany
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Location: I had a Déjà Moo - I've seen that BS before!
Quote:
Originally Posted by hopkins View Post
I tested the Aa-ab32313 and while it is quite good I did not find it better than the Hypex Ncore which have a more refined sound IMO.
They are in the same league, hypex sounds better though. But keep in mind, you pay several times more than what the Sure/Wondom costs.
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I had a Déjà Moo - I've seen that BS before!
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