cwejman-vco-2rm

Cwejman VCO-2RM

Dual oscillator with ring modulator for metallic mayhem

20 HP Eurorack module

The VCO-2RM is a dual oscillator module with an integrated ring modulator, offering two fully independent voltage-controlled oscillators with multiple waveform options, hard sync, and a pre-patched ring modulator between the two oscillators. Its musical character ranges from classic analog leads and basses to aggressively metallic, bell-like, and percussive timbres thanks to the non-harmonic sidebands produced by the ring modulator.

Features

  • Two fully independent VCOs with Coarse and fine Tune controls
  • Each oscillator has three leveled FM inputs calibrated to 1V/octave
  • Pulse width control per oscillator from 5% to 95%
  • Waveform selector with mix positions per oscillator
  • Hard sync of OSC2 to OSC1
  • Integrated ring modulator pre-patched to OSC1 and OSC2 outputs
  • External X and Y inputs for routing any signal into the ring modulator
  • Ring modulator produces sum and difference frequency sidebands for metallic and bell timbres
  • Ring modulator usable as tremolo source with LFO modulation
  • All FM inputs calibrated for 1V/octave pitch tracking
  • 20hp format

Controls & Jacks (55)

  • OSC1 Coarse— Coarse frequency control for oscillator 1
  • OSC1 Tune— Fine tunes oscillator 1 (± 6 semitones)
  • OSC2 Tune— Fine tunes oscillator 2 (± 6 semitones)
  • OSC1 Waveform— Selects waveform or mix of waveforms for oscillator 1
  • OSC1 FM1 Level— Frequency modulation 1 intensity for oscillator 1
  • OSC2 Coarse— Coarse frequency control for oscillator 2
  • OSC1 Pulse Width— Adjusts pulse width of pulse wave from 5% to 95% for oscillator 1
  • OSC1 FM2 Level— Frequency modulation 2 intensity for oscillator 1
  • OSC2 Pulse Width— Adjusts pulse width of pulse wave from 5% to 95% for oscillator 2
  • OSC2 FM1 Level— Frequency modulation 1 intensity for oscillator 2
  • RM X Input— Ring modulator X input (external signal)
  • OSC1 FM3 Level— Frequency modulation 3 intensity for oscillator 1
  • OSC2 FM2 Level— Frequency modulation 2 intensity for oscillator 2
  • OSC1 Out— Audio output from oscillator 1
  • RM Out— Ring modulator audio output
  • OSC2 V/Oct— 1V/octave pitch control input for oscillator 2
  • OSC1 FM3— Frequency modulation input 3 for oscillator 1
  • OSC1 FM2— Frequency modulation input 2 for oscillator 1
  • OSC1 V/Oct— 1V/octave pitch control input for oscillator 1
  • OSC1 FM1— Frequency modulation input 1 for oscillator 1
  • SYNC 1— Enables synchronization of OSC2 to OSC1 frequency
  • OSC2 FM3— Frequency modulation input 3 for oscillator 2
  • OSC2 Out— Audio output from oscillator 2
  • SYNC 2— Enables synchronization of OSC2 to OSC1 frequency
  • OSC2 FM2— Frequency modulation input 2 for oscillator 2
  • OSC1
  • Sync Enable— Enables synchronization of OSC2 to OSC1 frequency
  • OSC2 FM1— Frequency modulation input 1 for oscillator 2
  • RM Y Input— Ring modulator Y input (external signal)
  • OSC2
  • COARSE (OSC1)— Coarse frequency control for oscillator 1
  • TUNE (OSC1)— Fine tunes oscillator 1 (± 6 semitones)
  • FM1 (OSC1)— Frequency modulation 1 intensity for oscillator 1
  • FM2 (OSC1)— Frequency modulation 2 intensity for oscillator 1
  • FM3 (OSC1)— Frequency modulation 3 intensity for oscillator 1
  • PULSE WIDTH (OSC1)— Adjusts pulse width of pulse wave from 5% to 95% for oscillator 1
  • WAVEFORM (OSC1)— Selects waveform or mix of waveforms for oscillator 1
  • COARSE (OSC2)— Coarse frequency control for oscillator 2
  • TUNE (OSC2)— Fine tunes oscillator 2 (± 6 semitones)
  • FM1 (OSC2)— Frequency modulation 1 intensity for oscillator 2
  • FM2 (OSC2)— Frequency modulation 2 intensity for oscillator 2
  • FM3 (OSC2)— Frequency modulation 3 intensity for oscillator 2
  • PULSE WIDTH (OSC2)— Adjusts pulse width of pulse wave from 5% to 95% for oscillator 2
  • WAVEFORM (OSC2)— Selects waveform or mix of waveforms for oscillator 2
  • RM Mix— Ring modulator output mix level
  • V/Oct (OSC1)— 1V/octave pitch control input for oscillator 1
  • FM1 Input (OSC1)— Frequency modulation input 1 for oscillator 1
  • FM2 Input (OSC1)— Frequency modulation input 2 for oscillator 1
  • FM3 Input (OSC1)— Frequency modulation input 3 for oscillator 1
  • V/Oct (OSC2)— 1V/octave pitch control input for oscillator 2
  • FM1 Input (OSC2)— Frequency modulation input 1 for oscillator 2
  • FM2 Input (OSC2)— Frequency modulation input 2 for oscillator 2
  • FM3 Input (OSC2)— Frequency modulation input 3 for oscillator 2
  • X Input— Ring modulator X input (external signal)
  • Y Input— Ring modulator Y input (external signal)

How-To Guides

  • Classic Hard Sync Lead
  • Ring Mod Bell Tones
  • LFO Vibrato Lead
  • Envelope Pitch Bend Bass
  • Ring Mod Tremolo
  • Metallic Percussion Hit
  • Detuned Dual Oscillator Pad
  • External Source Ring Modulation
  • Pulse Width Modulated Bass

Explore the interactive VCO-2RM panel on BleepDex — tap any control to learn what it does.

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