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Red-knob Twin Footswitching scheme?

9/8/2004 6:41 PM
Rich StevensRed-knob Twin Footswitching scheme?
I'm cross-posting this on the guitar amps forum...  
I once briefly owned a red-knob "The Twin". I remember it had a cool footswitching setup that handled two switches on a single normal (not stereo) guitar cord. It did this by sending a low-voltage AC signal out to the footswitch, then used diodes in the switch to send two signals back to the amp; one the top half of the AC wave, and the other, the bottom half. I can't remember the details, though.  
Does anyone have this schematic, or know of a link to a similar remote-switching circuit?