If you don't want heating resistors use separate +/-15V DC PSU without 2k2/2W resistors and 15V zeners for suply NE5532 and unregulated +/-83V DC PSU for suply amp.
Regards
thank u for ur reply sir,
can i use 53 v dc for run this amp. how much power i will get?
what is the minimum and maximum dc voltage for running 2pair outputs, any changes.
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hi apex sir,
today i prepared the second channel of the amp.
i put two pair with 55v dc supply with 10a fuses.
after power on one of the part is burn, the smoke is gone like a rocket.
but i cant see the burn part. but the parts are very clean.
there is no darken marks in the board.
here are the photos.
today i prepared the second channel of the amp.
i put two pair with 55v dc supply with 10a fuses.
after power on one of the part is burn, the smoke is gone like a rocket.
but i cant see the burn part. but the parts are very clean.
there is no darken marks in the board.
here are the photos.
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Yep, there are no doubts. You don't even need to smash them open. Just look at them. nazirdigi, I'm afraid you are a victim of counterfeit transistors and that amp will never work unless you buy original devices.
