owner: Matt Bassett
"The 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.
"The Prophet-5 sustained six revisions (or revs). Rev 1 was the original design. Rev 2 was a refinement of the original design and largely transparent. Rev 3, however, was a vastly different synthesizer than Revs 1 and 2. Introduced to Rev 3 were new voltage controlled IC's (CEM), an improved ADC, DAC, and a different control voltage distribution scheme. More sophisticated editing and tuning routines were designed, and to improve servicibility, voice trimmers were reduced from 80 to 45. Some believe that the Rev 3 synthesizers are slightly inferior (sonically) to their predecessors by revealing an absence in the lower frequencies. While this may be true, the majority of the Rev 3 synthesizers are far more operationally stable than their Rev 1 and Rev 2 counterparts.
"Instrument codes are coded by model number, followed by a period and then the rev level.
- 1000.1 -- Rev 1: Serial Numbers 1-182
- 1000.2 -- Rev 2: Serial Numbers 184-1299
- 1000.3.0 -- Rev 3: Serial Numbers above 1300
- 1000.3.1 -- Rev 3.1 adds some changes to the RAM.
- 1000.3.2 -- Rev 3.2 (USART, Analog)
- 1000.3.3 -- Rev 3.3 with 120 Programs
- 1001 -- Prophet-5 Synthesizer with Remote Keyboard
- 1005 -- Prophet-5 Synthesizer with Polyphonic Sequencer"
Comparing the Rev2 to the Rev3
The Rev1 and Rev2 are drastically different synthesizers from the later model Rev3's and above. Below is a brief glance at some of the differences between the panels as seen on the Rev2 (pictured here) and the Rev3's pictured above.
- Preset button absent on rev3. Notice blank label, presumed to have once read "to tape".
- Preset button absent on rev3. Notice worn label reading "from tape". This button was used with the "preset" button in the Modulation Section to double as cassette interface switches (after manufacturer's upgrade).
- Different location of master volume knob
- Lack of dedicated cassette interface section
- Edit button: later models had instant editing and therefore don't have this button. Instead, Rev3's have the A440 tone button next to the "Master Tune" as well as the "Tune" button, to initiate auto-tuning (with a light in it).
|-this information and these images were provided by the owner of this Rev2, David Bellamy of Northants, England|
Who Played This Instrument?
Dave Balfe of Teardrop Explodes,
Dave Ball of Soft Cell,
Jonathan Cain of Journey,
Bob Casale of Devo,
Richard Coles of Communards,
Michael Cotten of The Tube Group,
Chris Franke of Tangerine Dream,
Anders Eljas of Abba,
Philip Glass Ensemble,
Hall & Oates,
Tony Hymas of Ph.D.,
Eddie Jobson of UK,
Charles Judge of Giorgio Moroder,
Brian Kehew and Roger Manning of The Moog Cookbook,
Anton Levay of the Church of Satan,
Dean Klavett of Lene Lovich band,
Howard Leese of Heart,
Cory Lerios of Pablo Cruise,
Nick Magnus of Steve Hackett,
Gary Moore of La Mafia
Chris Newman of Johnny Hates Jazz,
Gary Numan - in '79 and they had 5 onstage,
Andy Nye of Michael Shenker Group,
David Palmer of Jethro Tull,
Alan Parsons Project,
Dominique Perrier with J-M Jarre,
Nick Rhodes of Duran Duran,
Pete Sears of Jefferson Starship,
Tim Simenon of Bomb the Bass,
The Talking Heads,
Tears For Fears,
Richard Wright of Pink Floyd,
Andy Partridge and Dave Gregory of XTC - used extensively on their 1982 LP English Settlement,
Akiko Yano of Yellow Magic Orchestra,
[Let us know if you have any further additions to this list.]