I have completed the 6BM8 build, and I am impressed with the sound. However, with the transformer wired up for 125vac, my pentode plate voltage is only 203-206vdc (tubes in). If I wire the transformer for 115vac, the pentode plate now sees about 240vdc. I would like to get the voltage right at 220vdc.

First, is it necessary? I know it is not because it works, but I would like just a bit more power. Second, is it possible? I would think that voltage drop resistor might help, but I am not sure which one I should change.

Any advice on the approach would be helpfull. I DO have psuds2.

Roger