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"Version3 of the cr8000 modification project. This is my old broken Roland CR8000, modified to allow control of various parameters of the analogue voices. Bandpass filter on the rimshot, clav tuning, hi-hat decay, kick tom and conga tune, clap noise level, oscillator array tuning, midi with midi volume control (alters the strength of the trigger, and effects synthesis parameters). This is the 3rd version. . . everything rewired, and spooled inside. There are some minor probems remaining. i've been experimenting wih contact points as well, and am finding these more interesting than knobs for control."
Title link takes you to more including a great shot of the wiring of the CR-8000.