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Class D Switching Power Amplifiers and Power D/A conversion

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Old 17th October 2007, 05:44 PM   #1
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Default class d on ebay

Anyone seen these before ?

http://cgi.ebay.com/4-100-watt-4ohm-...QQcmdZViewItem

It kinda look like some TAS/tripath module, anyone know anything about these ?
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Old 18th October 2007, 07:20 PM   #2
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I wouldn't know but in case anyone missed it:

http://www.sure-electronics.net/rf,audio/AA-AB009.pdf

Some of their other amps use LM3886TF, TDA7293 (both AB) or MPS7720
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Old 20th October 2007, 03:22 AM   #3
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Interesting.

I must be blind, someone please correct if i'm wrong, but this comes fully assembled right?

Interested in testing one asap.
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Old 20th October 2007, 07:29 PM   #4
aandy is offline aandy  United Kingdom
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i have bid on one,if i get it i will test and report on it
andy
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Old 15th November 2007, 05:23 PM   #5
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Hi Andy,

Have you recieved your amp? I spotted these on ebay and was intrigued as to the sound- the price is right.

James
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Old 15th November 2007, 05:42 PM   #6
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You might want to read this thread (on the same amp/topic) as well:

Sure-Electronics.com class d amps
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Old 15th November 2007, 07:26 PM   #7
aandy is offline aandy  United Kingdom
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Hi James
got it several days ago.
i have only bench tested it.
8/4/2
doing around 70watts at 4 and 125 ish at 2.
more importantly was exstreamly good at 20 khz
well better than some so called profesanal class D amps
costing thousands of pounds.
and allmost no chopper products preasent.
very impressed with it and it cost 20 pound so bit of a p take.

andy
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Old 16th November 2007, 02:26 PM   #8
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Thanks chaps.

Depending on the outcome of sound trials, I will probably get one of these.

James
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Old 17th November 2007, 01:25 PM   #9
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I'm new to class D - just reading thru the stickies right now...

This looks like it could be used to power my subs quite well... by the looks of it I could just hook it up to a 65aH car battery I have spare...

Anyway, my question was could I use a balanced output going to this amp, then each sub to 2 channels...

I'm using car subs, so they are 4 ohms each... so could each sub get around 150Wrms (clean) when running balanced? or have I missed something here?
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