Norm wrote:My understanding is he just took a volume pedal and wired the pot as a tone control. I don't recall reading that he added any special circuitry to boost the effect (which is what the wah pedals do). I think he only used it once on Boo Boo stick beat and shelved it after that.
The gadget using organ circuitry was his "invisible bass man" where he used a frequency splitter from a Hammond organ that dropped signals down an octave
Norm, I think he did use it on a few other tunes... Lonesome Me, Django's Castle, White Silver Sands, One Mint Julep, Night Train, Sleep Walk, Till There Was You, Hot Toddy all on the Teensville album. It's never "in your face" but used sparingly for the most part. Lonesome Me is a good example, used for example once at the end of the 1st chorus to emphasize "lonesome", just enough to perk up the ears and ask yourself "what was that?" Not sure if used it on other albums but that was typical. Outside of echo, tremolo, and the phaser in the 70's he seemed to use effects sparingly and tastefully, on one or two tunes that benefitted from their use (Inka Dinka Doo with the envelope filter comes to mind).
Doug