Is there a way to change the value of the pot needed?

Started by mth5044, September 14, 2008, 07:22:40 PM

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mth5044

I have a fully loaded wah pcb laying around (because I needed the enclosure  :icon_rolleyes: ) and rumaging through my stuff, I found that I have 10k membrane pot that I was gonna use on an oscillator project that fell through. IIRC, the wah that it was taken from (the low line Crybaby ones) has a 100k pot. Is there any component I can remove or change that would adapt the circuit to use a 10k pot rather then the 100k? I wouldnt want to only be able to use 10% of the wah's sweep because that would be stupid. Thinking about a membrane pot controlled wah gives me the heeby-geebys.

Thanks for any info.

John Lyons

Basic Audio Pedals
www.basicaudio.net/

mth5044

Oddly enough, I just read that.

I thought the general concensus was that you could take a pot down in value, but not up?

calpolyengineer

Yes, that is because of some basic properties of parallel resistors. With two (or more) resistors in parallel, the combined resistance will always be less than both of the resistors.

If you don't mind having limited range, you could always put a resistor in series with a pot to make it bigger.

-Joe

John Lyons

Basic Audio Pedals
www.basicaudio.net/