Schematic of Master Module and Performance Presets for Keith Emerson
Description:
Every synth today has an assortment of "presets" - different sounds or emulations of acoustic instruments that the operator can select at the push of a button. Presets enable performers to change quickly between different sounds without having to repatch the synthesizer. Bob developed a set of "preset" circuits for modular synthesizers that he premiered at the 1969 live concert at the Museum of Modern Art. One of those specially adapted synths was purchased by Keith Emerson, with whom Bob collaborated to devise a set of customized presets. Shown here are schematics for Keith Emerson's master module and "performance presets" (dated January 1969 in blue - revisions added in red in 1973).