the first Prophets built, there where some single manual Prophet 10's, but they turned out to be completely unreliable. Most of them where sent back to SCI, to have one of the two voiceboards removed.
SSM CHIPS for rev1/rev2 & CEM Curtis chips for Revision 3
Particularities on the Rev 1 : Serial number : 0 to 182/ Koa wood case/ 40 program memories/ No cassette interface/ No midi kits available for this version/ Power switch is found on the top panel, not on the back/ SSM chips/ Auto-tuning is accomplished by pushing program select switches 1 and 8 simultaneously/
Editing a parameter required hitting two switches simultaneously, after which turning a knob would add to or subtract from the value as stored in memory
Sequential only built 182 Rev 1's. They where hand-assembled, and then rushed out the door to generate desperately needed cash flow, they proved too fragile for life in the fast lane. In the following picture you can see the vacant space where the optional voices 6 until 10 where meant to be. The white pins you can see on the print, where there to support this print. This to illustrate the Rev 1 was also early available as a single manual Prophet 10.
In 1980 the Prophet 5 Rev 3.0 came out. The Rev 3.0 had a cassette interface on board. The Rev 2 did not have this feature. Therefore Sequential thought it was interesting to bring out a cassette interface mod for the Rev 2. And so they did. The cassette interface modification for the Rev 2 existed only as a retrofit and was never a standard feature on a Rev 2. An official revision 2.1 (or even a 2.2) never existed in contradiction to what some sources may say. Two small grey buttons are visible on the Rev 2 models (panel far left and top centre). These were 'Preset' controls to enable instant editing of mod and filter sections for the selected patch; they also doubled as cassette interface load and save controls. They are left out from on a Rev 3.
Prophet 5 - Revision 3.1
The upgrade from 3.0 to the 3.1 was a minor one, and is not noticeable by the player. The upgrade consists out of : Update and expansion of the microcomputer's memory configuration. This allowed the use of a higher-reliability part and elimination of the +12V and -5V power supplies. This created program space for a diagnostic memory test. Particularities on the Rev 3.0 : Serial number : 2286 to 2423 . Identical to the Rev 3.0 besides some slight internal modifications
Prophet 5 - Revision 3.3
The modification from Rev 3.2 to Rev 3.3 increases the Prophet 5's program storage capacity from 40 to 120 patches.
The update involves :
Particularities on the Rev 3.3 :
Revision Notes
A lot has been said and written about the different revisions of the Prophet 5. Speculations seem to been written down as facts. Some sources insinuate a Rev 2.1 and Rev 2.2 existed. Some sources state that the Prophet 5 was originally conceived as a Prophet 10, and a slimmed down version of the 10. These facts turn out to be hoaxes. In this section we try to give a thorough and precise history of the different revisions. If you still might have some additions, or facts that are not mentioned, please e-mail us.
