5150 III Bias

[Guitar G]

Alright. Opened her up again last night and reset the bias using the DMM set to 200 mV. Factory reading was 82mV. I cranked it up to 118 mV. Bear in mind, thats 118/4, so I am at about 29 mV bias per tube. Having noodled around with the bias quite a bit over the past few days, I'd say the sweet spot for this amp is around 28 - 30mV.

Thanks for all the help.

This site is great.