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Bias question - plate voltage measurement
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Sorry if this is a dumb one but I haven't done it in a while, and it's possible I did it wrong the first time. When you bias your amp, do you measure the plate voltage in relation to the ground and simply use that to set the bias (which is what I seem to find online), or do you use the voltage difference between the plate and the cathode instead? So that'd probably be ~20-30V less...

I think since I last did it in 2012 I'll probably take the amp out of its enclosure to (carefully) re-measure the plate voltage. Apparently I wrote down 370V last time, which is a tad high, I'm curious to see if it's changed. Using a 6V6GT so 14W max dissipation.

Thanks.
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