just experiecning a problem with my wah... whenever its in heel down position, i seem to get interferance from what sounds like a tv, could be mine or my neighbours (hear voices thru my speakers)... what could this be? whats the cure...
Wah's can often pick up radio: they have an inductor in the circuit that helps them work like a radio receiver. Sorry, that's as far as my technical knowledge goes!
I'm sure someone will correct me if this is wrong, but I think the whole guitar and guitar leads act like an ariel for the Wah Wah. In that case, having a well shielded guitar and leads would help minimise it.
Ah what you want to do is shield the wah. The guitar doesn't really matter.
I know someone who played a gig right outside of a radio station and when I play near a radio station I have the same problem. I asked what he did. He put aluminum foil inside the wah and got no interference.