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Re: Hum pot in DHT preamp ???

Hey Dave,

Give it try, it's worth it.

You're right about the 50V with a 7.5V tube though.
So far I blew two 801s. The first due to a wiring error
and the second, when I measured the voltage across a
filament biases tube and accidentally shorted one
side to the chassis, which applied 45V to the filament.
A short flash and the tube was gone.


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