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RE: D70 Output Tubes Drifting WHILE Biasing

I swapped out all the driver and phase splitter tubes, rather than leaving them empty. 1 trim pot appears to have tightened up but no change to the other 3. Baffling. I guess I should just take them out altogether. All the rolling and letting the amp warm up each time takes awhile. Going to watch some hockey and back at her tomorrow.

Thanks again.

Jonesy


"I know just enough to get into trouble. But not enough to get out of it."



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