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.
