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Moog Voyager VX-351 CV Expansion

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Quick Overview

The VX-351 Voyager CV Expander provides all the Control Voltage (CV) and Gate outputs of the minimoog® Voyager. Control Voltages are the signals used inside an analog synthesizer to cause changes in the sound produced whether pitch, timbre, duration, or loudness. A Gate signal is used to turn a circuit on or off. For instance a gate is used to trigger the envelope generators of an analog synthesizer, which causes a note to sound. The minimoog Voyager has 10 Control Voltage and 4 Gate Inputs. The VX-351 contains 19 Control Voltage and 2 Gate outputs generated by the Voyager’s analog synthesizer circuits. In addition it contains two 4-way mults for distributing a single CV to multiple destinations, and two attenuators for reducing the amount of a CV.

With the VX-351, the Voyager attains the power of modular synthesis. Standard _” patch cords can route a control signal (for instance - a LFO triangle wave) back into the Voyager’s CV inputs (for instance – the Pan control input) for a host of new modulation possibilities. Highly complex and fascinating sounds can be achieved.


  • (1) DB-25 cable for connection to the Voyager’s accessory port

  • (19 ) Control Voltage outputs

    • - Keyboard Pitch (w/ internal trim to calibrate to 1 V/Octave)
    • - Keyboard Velocity
    • - Keyboard Afterpressure
    • - Touch Surface X
    • - Touch Surface Y
    • - Touch Surface A (area)
    • - Pitch Bend Wheel
    • - Mod Wheel
    • - MOD 1 signal (signal at Voyager MOD 1 input)
    • - MOD 2 signal (signal at Voyager MOD 2 input)
    • - LFO triangle wave
    • - LFO square wave
    • - Mod Wheel Mod Buss output
    • - Pedal/On Mod Buss output
    • - Filter Envelope
    • - Volume envelope
    • - Sample and Hold Step
    • - Sample and Hold Smooth
    • - Noise

  • (2) Gate outputs

    • - Keyboard Gate
    • - Touch Surface Gate

  • (2) Attenuators