Pot .Value

[Dave Hepworth]

Hi everyone,
I am renovating an old passive ,rack and pinion volume pedal.
Question ,
Will a 500K audio taper have a different taper / sweep compared to a 250K audio taper.

I am aware of high frequency losses in both values and will put a treble bleed cap across 1 and 2 terminals to help with this .
Just not sure of taper with them .Wanting smoothest volume increase.
Thanks for any advice .

[Dave Grafe]

The taper should be the same on both but the optimum impedance for a psg pickup not so much. 250k pots are fine for electric guitars with pickup impedances in the 6k-9k range, but most pedal steel guitar pickups are easily double that or more, which is why 500k pots are most common in psg volume controls.

[Mike Auman]

There's no audible difference in the maximum/minimum levels between a 250k and a 500k. An audio taper will give you a smoother volume increase than a linear taper, but if both are audio taper, the only difference relates to Dave's comment about a 500k pot being a better load impedance for your steel than a 250k pot.

[Dave Hepworth]

Hi All,
Many thanks for your replies.I opted for the 500K audio.All is working well on the pedal .I even used some twin and braided earth ( mic cable) to wire in and out to and from pot to keep things tidy and NO noise .Happy chappy.
Regards Dave