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Crumar | Nerve Centre 50


The Crumar Nerve Centre 50 rhythm machine was the “cat’s meow” in its day. It has 16 different rhythms plus a few extras like auto chord with piano, guitar, and organ. It also has a bass feature, alternating or walking.

I never used this machine to its full potential. It has a 35 pin connector that was made to hook up with a special system. When I bought my Duo-Vox accordion, from a retiring musician, it came with it. Beside the 35 pin connector it has an output for a regular guitar jack which was how I used it. I tested the machine before this writing and the rhythms work fine but not having the proper hookup for the 35 pin connector I could not test the other features.

This also has a foot switch with three switches. The first starts the rhythm, the middle one is marked M/m, not sure what that one does, and the last is fill in. The insulation on the cable for the 35 pin connector has dry rotted and is falling off, but the wires underneath seem fine. Also the cable for the foot switch has a grommet type thing that has pulled out of the peddle body but is still there. The unit comes with a special detachable power cord.
ModelNerve Centre 50
Engine TypeAnalog
Drums16 Rhythms
Key typeN/A
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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