My friend asked me: "I'd like to trigger separately the instruments of this machine via MIDI. Can you build me a MIDI controller/trigger circuit for my KPR-77 drum machine?" I answered: "I'll answer to you if you show me the schematic of it!" :) The MIDI to trigger circuit is no problem, but I didn't find any information about this drummachine's circuits on the web. Has anybody have schematic of this machine? Especially the trigger inputs of analogue section. Many thanks! Topy
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KPR-77 schemo
2003-03-04 by Topy