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Roland | CMU-800

Description

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.

BrandRoland
ModelCMU-800
DeviceSynth
TypeDesktop
Engine TypeAnalog
EngineVCO
Voices (max)4
Oscillators4
Engine DetailedPoly-Chord, Mono Bass, Mono Melody, Analog Drum
Envelope (VCA)Sustian, Decay
Keys0
Key typeN/A
VelocityN/A
AftertouchN/A
CV-gate8 CV/Gate
Produced:1983 - 1984
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

Manuals, patches etc.

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