Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
You have some cool stuff there! I don't have any real good comments or suggestions, just some loose thoughts. I'd probably trace the circuit to try and figure out the unknowns. The tape ins and outs I'm guessing accept different levels, but that's just a guess. The pot may be a hum bucking pot. Xtal may be an auxilliary input; I doubt it's a crystal connection for a tuner circuit, but I don't know. Maybe others will chime in with better info.