Wah pedal Capacitor Selector

Started by mdame, March 23, 2011, 08:43:04 PM

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mdame

I was looking into making the mod wah and read this in the notes in regards to the rotary switch for the capacitors:

"You can place a 1M-resistor over every pole on the switch stop the popping"

Where exactly do i place the resistors?  Between the six poles or between each pole and the main pole?

blooze_man

I think they go on each pole to ground like a pulldown resistor.
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CynicalMan


petemoore

#3
  470k will generally do 'it', but you might want 1M or more even, this is a shunt route to ground, a lower value increases the signal loading.
  Right where the DC blocking capacitor would 'zap' the input or output with stored charge when the switch contact introduces that lead to the signal path [='s pop].
 This resistor allows a route for any pop-charges that would otherwise accumulate on the capacitors switch side to be [at a rate determined by the R value] drained off to ground at all times.
Convention creates following, following creates convention.

mdame

I see now!  The main pole on the rotary goes to ground, so I can just put the resistors between that pole and each of the 6 positions.

Thank you!