Sequential Prophet-10 Rev4 Analog 10-Voice Polyphonic Synthesizer (studio demo unit)

This unit was used in our studio for content and synth lessons! The Prophet-10 Rev 4 is Dave Smith’s ten-voice version of the analog poly synth featuring all three revisions of the legendary Prophet-5 - Rev1, Rev2, Rev3 - through the use of genuine Curtis analog VCOs and filters (as in the Rev3) as well as new 2140 low-pass filters designed by Dave Rossum, like the 2040 filters he designed in the original Rev1 and Rev2. A Rev switch lets you choose between the two filter designs and also adjusts the Filter Envelope’s shape and response to match the original Prophet Rev 1/2 or Rev 3 respectively. MIXER Oscillator 1 amount Oscillator 2 amount White noise amount LOW-PASS FILTER Four-pole, resonant, low-pass filter per voice Switchable between authentic versions of the Prophet-5 Rev1/2 filter and Prophet-5 Rev3 filter Rev1/2 filter is a Dave Rossum-designed 2140, the modern counterpart of the original 2040 filter found in the Prophet-5 Rev1 and Rev2 Rev3 filter is a Doug Curtis-designed CEM 3320 Filter can be driven into self-oscillation with the Resonance control Keyboard tracking: off, half, full FILTER ENVELOPE Four-stage (ADSR) envelope generator Velocity modulation of envelope amount AMPLIFIER ENVELOPE Four-stage (ADSR) envelope generator Velocity modulation of envelope amount LOW FREQUENCY OSCILLATOR Three wave shapes: sawtooth, triangle, square. All waveshapes can be engaged simultaneously Both Initial Amount and mod wheel control Mod destinations: oscillator A frequency, oscillator B frequency, oscillator A and B pulse width, filter cutoff POLY MOD Sources: filter envelope and oscillator B Destinations: oscillator A frequency, oscillator A pulse width, filter cutoff VINTAGE KNOB Recreates the characteristics of various Prophet-5 models by varying the behavior of oscillators, envelopes, amplifiers, and other parameters. Go from a very stable “4” — as in Prophet-5 Rev4, (the new version) — all the way to “1,” as in Prophet-5 Rev1, the rarest and most temperamental of all Prophet-5s. AFTERTOUCH Channel (mono) aftertouch Destinations: filter cutoff frequency, LFO amount BI-TIMBRAL OPERATION Layer mode: two different 5-voice programs stacked together simultaneously Split mode: two independent, user-assignable performance zones, with a different 5-voice program assigned to each. PERFORMANCE CONTROLS Full-sized, semi-weighted, premium Fatar 5-octave keyboard with velocity and aftertouch Mod wheel Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down) Polyphonic glide (portamento) Unison (monophonic) mode with configurable voice count, from one to all ten voices and key modes Preset switch: when off, the front panel is live; what you see is what you hear PATCH MEMORY 200 user and 200 factory programs in 5 banks of 40 programs each Direct program access, including Prophet 5-style single-button access to the current set of 8 programs IN/OUT Mono output (1 x 1/4” phone jack) Headphone output (stereo, 1/4” phone jack) MIDI in, out, and thru ports USB for bidirectional MIDI communication Control voltage in/out (1 x 1/4” phone jack) 0- +5V input/output signal. Configured for 1-volt-per-octave operation. Gate in/out (1 x 1/4” phone jack). Accepts a 1.5 to 15-volt on/off signal to gate the envelopes of a single voice on the Prophet-10. Outputs a 15-volt on/off used to gate the envelopes of an external synth. Low-pass filter cutoff expression pedal input Volume expression pedal input Sustain footswitch input POWER IEC AC power inlet for internal power supply Operates worldwide on voltages between 100 and 240 volts at 50 to 60 Hz; 28 watts maximum power consumption PHYSICAL SPECS 37.37” L x 16.35 W x 5.95″ H (94.92 cm x 41.52 cm x 15.11 cm) 32 lbs (14.51 kg) Roadworthy all-steel construction with premium black walnut heartwood body and trim