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RSF Kobol Expander II

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    The RSF Expander II rack mount modular synth was manufactured as a companion option module for the Kobol Expander I synthesizer. The 19" 3 U space unit features a Ring Modulator, Envelope, a VCA, an LFO, Mixer with 3 inputs and 1 output. Additionally it has a Sample & Hold module with internal or external clock, a Noise Generator, Voltage processor that is delectable Linear or Logarithmic, Voltage Inverter, Gate Delay, an Envelope Follower, Lag Generator, and finally 2 multiples.

    The Expander II module makes for a complete modular synthesizer when couple with the RSF Expander II and RSF Controller Keyboard. Power for the unit is 240 volts. Less than 200 units were manufactured in 1978 and the unit is a very rare find in the vintage synthesizer market.
    Type: Analog
    Synthesis: Subtractive
    Oscillators: 0
    Waveforms: White Noise
    Osc Modulation: Envelope, Knob, LFO, Ring Modulation
    Envelopes: 2
    Evelope Paramerters: Attack, Decay, Sustain
    LFO: 1
    LFO Parameters: Square, Triangle
    Polyphony & Tuning
    Polyphony: 1
    Modes: Mono
    Patches RAM: 1
    Case: Module
    Rack Size: 19", 3U, Full
    Controls: Knobs, Switches, Mod - Wheel 2, Modulation 1/4" Jacks
    Audio Output Connections: 1/4" Phone Jack, Mono Out
    Audio Output Count: 1
    Inputs: 1 x 1/4"
    CV Ports: CV IN, Gate In
    Power: 240 volts
    Year Released: 1978
    Year Discontinued: 1979
    Units Made: 200
    Used By
    Jean Michel Jarre, Peter Gabriel, Depeche Mode
    Manuals & Documents
    Used Price: $5,000 - convert
    YouTube Videos
    References & Sources

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