PROPHET 5 SEQUENTIAL CIRCUITS MODEL 1000 ANALOG SYNTHESIZER

PROPHET 5 SEQUENTIAL CIRCUITS MODEL 1000 ANALOG SYNTHESIZER Rev 3

Finish - Walnut Used - very good Original family owner The Prophet-5 is an analog synthesizer manufactured by the American company Sequential. It was designed by Dave Smith and John Bowen in 1977, who used microprocessors, then a new technology, to create the first polyphonic synthesizer with fully programmable memory. This allowed users to store sounds and recall them instantly rather than having to reprogram them manually.Dave Smith’s Prophet 5 contains five individual voices. For its principal sound sources each voice contains two VCO's (voltage controlled oscillators), OSC A and OSC B, and a white noise source which can be mixed into a resonant low-pass VCF (voltage controlled filter). The filter modifies the voice timbre under control of its four-stage envelope generator. The filter may also be resonated and serve as a sound source. Following each filter, a VCA (voltage controlled amplifier), also controlled by a four-stage envelope generator, shapes the voice amplitude. Supplementing the basic voices are polyphonic modulation (POLY-MOD) signal routings within each voice that allow OSC B and the filter envelope generator to function as modulation sources applied to OSC A frequency or pulse width, or the filter frequency. Finally, there is a single LFO (low-frequency oscillator) and a pink noise source which can be mixed to modulate all five voices, as adjusted by the MOD wheel. This Synthesizer is a legendary musical instrument that sounds incomparable. The original P5 sounds like a living organism. And more.