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YAMAHA YST-SW80 Home Sub Woofer Do I keep blowing it through ignorance?

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modz786:
YAMAHA YST-SW80 Home Sub Woofer

Hi Guys and Gals )))

this sub has two choices of inputs, RCA or direct Amp input with speaker out terminals.

Im wondering does it have a max amp input rating that it can handle because I cant find anywhere what the Max input watts from an Amp should be ?

The output transistors keep blowing :-BROKE

Im a newbie in the forum so can i publish a link to the schematic service manual here?

Cheers!

NiHaoMike:
Just replace the whole amplifier board with a fairly cheap class D module?

modz786:
Class D, its a last consideration if fault not cured.

The volume is reduced as it still works but doesn't sound nice.

When the replacement pair of Transistors arrive I will scope the board this time

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