Roland CMU-800

Roland CMU-800 Image

The CMU-800 is a little four-channel mixer with internal preset voices and sequencer software for an Apple II or PC. There is a ribbon cable out the back with a card attached. It features analog synthesis with fixed sounds. Four note polyphony in the chord section, monophonic bass and melody synth sections, and an analog drum section.

The Chord/Melody section has only 1 sound. The drum section is similar to the TR-606 Drumatix, and the bass section is similar to the TB-303 Bassline (some limited adjustments in sound were possible via software). It has separate melody, bass, chord, rhythm, mix outputs. There's also 8 cv/gate outs to run external analog equipment by control voltages, and there's a click in/out. On the face it has knobs for portamento, Melody sustain & decay, Bass decay, and Chord decay. It also has volume level sliders for each of the instruments and a master volume slider. The software uses a similar music programming method as the MC-8 or MC-4.

It's definitely a limited instrument today, but it's unique, quirky and capable of some nice analog Roland sounds for cheap. If you have an old Apple or PC lying around, and access to the correct software you're in luck! Otherwise the CMU-800 is just a fancy paper-weight. It has been used by Astral Projection.

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9 Visitor comments
guru
June 30, 2012 @ 6:30 pm
The real power of this unit is being able to control 8 CV/Gate machines at once ! Once retrofitting it with a DIY Midi board it becomes a very powerful and rare midi-to-cv converter.
buctario
June 9, 2012 @ 9:19 am
if anyone is thinking of selling one of them please contact with me!
dristeas@gmail.com
cyllall
June 17, 2011 @ 10:58 am
The bass section couldn't dream of sounding like a TB-303, and you can't alter sounds in the software at all,it's just not possible.There are knobs on the front for sustain and decay and that's all you can change. Only useful for the drum sounds, really.
Andrei
April 14, 2011 @ 3:50 am
You can reach device schematics and Midi Upgrade kit on the following site: www.cmu800r.deftaudio.ru
 
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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - Monophonic to 4 voice polyphonic
  • Sounds - Poly-Chord, Mono Bass, Mono Melody, Analog Drum
  • LFO - none
  • Filter - none
  • VCA - Sustain, Decay
  • Keyboard - None (uses sequencer software)
  • Memory - None
  • Control - Apple II and CV/Gate
  • Date Produced - 1983/84

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