Thanks for the great instructions and I gotta say the modding the old intercom got me as hooked as anything. Beautiful! Built into Walkie Talkies. Some variations here. 1. OnA - Off -OnB switch toggles between Pot controlled FF - Normal Speed - Light controlled FF.2. Put slow Slow pot on (momentary on) switch to allow me to pulse it on and off.3. Also added a push-button dead switch (momentary off) on a lead to the speaker. I can now keep the loop going and rapidly cut out of the sound by tapping the button.4. Ran a momentary on button in line to that capacitor near the speaker. Got a really quick chipmunk effect.Waiting for some jacks to come to try some output ideas. It'd be real fun to jack these into a stereo or PA or something.
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