roland JC-120

[g1]

Sort of. Each speaker has it's own amp, but each channel can drive both amps.
If you look along the bottom of Ch.1 on schem., follow the lines from points #5 and 7. That is how either channel can drive both amps.

[nosaj]

So to actually isolate what is causing both speakers to rapidly go in /out when CH2 vol is increased I could just lift 5/7 or 11/9.
nosaj

[g1]

If you want to disable one amp, just put a dummy plug in the 'main in' jack.

[sugeda]

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[nosaj]

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Thank you very much
nosaj

[nosaj]

Are there any rules on transistor capacitor power supplies?
Say the 3300uf power supply? i have 4700uf on hand i know with tubes it depends on the rectifier.
Thanks,
nosaj

Found broken wire on cH2 low input jack that had been spun in circles.

[The Dude]

The 4700 will work just fine as long as it physically fits.

[nosaj]

recapped and fixedch2 input Everything works like its supposed to now.

Thanks,
nosaj