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RE: I get no music out of mynewly built amp

Posted by DAK on October 19, 2016 at 20:22:49:
bias supply is referenced to ground via 5.6k resistor
grid supply resistor of 6550 is 51k
When measuring the volts on power tube input grid (about -30vdc) there is definite tick when contact is made. That would indicate that the output tube stage is ok