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RE: Volume Pot Question

You want to wire it like Fig 2.

If you use fig 1 the stage driving the pot would have to drive a very low impedance as you turn the volume down.

There are two reasons why you don't want to use too large a value for the pot.

All tubes have grid leakage current.

The higher the grid leakage current to lower the Max permissible value for the grid resistor.

The other reason is Miller capacitance. The higher the pot value the higher it's output impedance. The higher the output impedance the lower the -3db point of the low pass filter that is created between the output impedance and the Miller capacitance.

What tube?

Tre'


Have Fun and Enjoy the Music
"Still Working the Problem"


Edits: 12/03/16 12/03/16
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