eBay Amp 650W AB Class - Someone Try It ?

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do you have any schematics we can look at?
i failed to see any mention of it in the add, i must be cockeyed....

power is actually dependent of the power traffo deployed with this board,
another limiting factor will be the heatsink size...
so discussing power without seeing these two is just academic discussions...


take it with a grain of salt.....😉

he claims 650Wrms at 8ohm with +/-80V rails. that is spot on with a bridged design.
 
This One is bridged 😀
 

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ehm. NO.
i think you need to get some basics in order.
find your calculator and calculate this.
(160*0.707)*(160*0.707)/8=??
if you get 798W here, then you need to tune your math skills.
if you get 1599W, then you need to consider that you are wrong regarding the way of calculating the power.
 
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You forgot to multiply by 2 because its +80 0 -80 so its 160volts not 80v and +/- 100 volts is +100 0 -100 ----200volts
mathematishn 😀
its 798rms


No, 798 is peak to peak..Doesnt matter if + or minus. 80v is effective for RMS calculation..

399w mentioned by audiosan when loaded to PS will dropdown the rail and may have only 240w power.

Model posted in #1 afaik is megatech TR-7007. When bridged, it becomes TRB-3600 as specs by Netiks
in post #11
 
No, 798 is peak to peak..Doesnt matter if + or minus. 80v is effective for RMS calculation..

399w mentioned by audiosan when loaded to PS will dropdown the rail and may have only 240w power.

Model posted in #1 afaik is megatech TR-7007. When bridged, it becomes TRB-3600 as specs by Netiks
in post #11

You are wrong my friend +/-80v is 160volts

So You are saying that for 800rms you need +/- 160v --- 320v no way you are totally wrong

with +/-160v you can get 1600rms on 8 oms 3200rms on 4 oms 6400rms on 2
 
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You are wrong my friend +/-80v is 160volts

So You are saying that for 800rms you need +/- 160v --- 320v no way you are totally wrong

with +/-160v you can get 1600rms on 8 oms 3200rms on 4 oms 6400rms on 2

i see that you agree that you need +/-160V to get 1600Wrms at 8ohm.
why can you then not agree that +/-80V only give you 398Wrms at 8ohm?
the calculation is the same.
 
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