Metropoulos Forum

I just finished my second build from George. I checked all voltages and bias twice. I'm not even getting a hiss from the speakers. (I checked the cab with an amp, no problems)

I used input cliff jacks on the outputs, possible problem?

I tried getting readings across the cliff jack and impedance switch. I was looking for the 13.4 ohms I have from the cab. Basically not getting a reading.

The PI resistors are all correct.

Is there a way to read the imp. switch to check for power? I hate to keep checking things with no load; not sure if the amp is seeing a load at this point.

Tubes are not redplating.

Much thanks!

Are the speaker jacks grounded? Should have a wire going to a ground lug, very important!

Yes, they are grounded.

I got it running!!

One of the output cliff jacks was bad, amazingly. Very confusing last couple of days. Ths standby switch is also suspect, making a thumping sound already!

But it works, and it cranks! My ears are ringing. Have to adjust the bright caps, at least.

Thanks Fritz.