Tube DIY Asylum

RE: 6BG6G mono amp sounds great but

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Thanks, I was wondering if that was the calculation. The spec is supposed to be 1.2V at cathode, which would be 1.2 divided by 25ohm = .048, about right.

If I turn my bias adjust all the way to the other extreme, I had -26.6v on the grid, the cathode read .660v and the plate voltage plummets down to 294V.

Solved it mostly, by bypassing a dropping R in the pi filter which bumped up the B+ and now I can adjust for 1.2V at the OP tube cathode.
Thanks to responders.

Pete

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