How can I increase the range of my wah pedal?”
There are some things that you could do to the circuit itself to increase the range, but for the amount of change that you gain by doing so, most of them are not worth the time and trouble. In a CryBaby type wah, the issue with the available range is mostly a mechanical one the pot simply doesnt go thru its full rotation when the treadle is operated. The simplest way to extend the range of your wah pedal is to remove the rubber bumper at the heel and shave some material off of the bumpers on toe end of the treadle – then adjust the pot rotation and footswitch accordingly. This will give you approx. 5/16″ more travel and can that make a significant difference in the sound. One thing to note is that the wah pot itself will not make the range wider or smaller – all it really does is select points between the upper and lower limits set by the gain of the first transistor. Another thing that could be done is to increase the gain of the first transistor. This probably will increase the range
