[sdiy] GEM / GeneralMusic SX-3 service manual

rsdio at audiobanshee.com rsdio at audiobanshee.com
Sun Jul 15 20:34:20 CEST 2018

You only need 11 or 12 pins for a matrix to support a 30-note pedal board. How many lines on the DIN plug?


On Jul 14, 2018, at 1:25 AM, Rutger Vlek <rutgervlek at gmail.com> wrote:
> Additionally, another question for GEM conaisseurs: there's a pedalboard input (looks like a DIN-variant plug) that seems intended to be used with bass pedals. Anyone know which type of pedals could connect to this? Or what the control protocol is? I'm suspecting it's either a straight diode-matrix-scan input (but don't think there's enough lines to make up the required notes), or communication line to some kind of multiplexer or shift-register internal to the pedals. I have pedals from another brand here, with straight switch-outputs and I'd love to modify it to work with the Gem.

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