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RSF Kobol Expander II

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Description
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.
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Technical Specifications
Type: Analog
Synthesis: Subtractive
Oscillators
Oscillators: 0
Waveforms: White Noise
Osc Modulation: Envelope, Knob, LFO, Ring Modulation
Envelopes
Envelopes: 2
Evelope Paramerters: Attack, Decay, Sustain
LFO
LFO: 1
LFO Parameters: Square, Triangle
Polyphony & Tuning
Polyphony: 1
Modes: Mono
Patches
Patches RAM: 1
Case
Case: Module
Rack Size: 19", 3U, Full
Controls: Knobs, Switches, Mod - Wheel 2, Modulation 1/4" Jacks
Connections
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
Production
Year Released: 1978
Year Discontinued: 1979
Units Made: 200
Used By
Jean Michel Jarre, Peter Gabriel, Depeche Mode
Pricing
Used Price: $5,000 - convert
Shopping
References & Sources

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