verbos/complex-oscillator
Complex Oscillator
Analog dual-VCO complex oscillator in the West Coast tradition. A master oscillator with voltage-controlled waveshaper is paired with a modulation oscillator capable of FM and AM cross-modulation; both oscillators use discrete triangle-core designs with exponential converters.611
Capabilities 5
- Amplitude Modulationamplitude-modulation
- Modulation oscillator AM-modulates the master output; at max amount behaves like a ring modulator.611
- Cross FMcross-fm
- Modulation oscillator FM-modulates the master oscillator's frequency with selectable waveform and voltage-controlled amount.611
- Dual VCOdual-vco
- Two discrete analog triangle-core VCOs with exponential converters; modulation oscillator (1 CPM–500 Hz) and master oscillator (3 Hz–20 kHz).611
- Wavefolderwavefolder
- Master oscillator has a complex waveshaping circuit feeding the master output, blending from sine to square to saw to folded sine under voltage control.611
- Waveshaper / Wavefolderwaveshaper
- 611
Jacks 13 (6 in / 7 out)
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (6) | |||
| Master OSC CV Input | cv | — | 611 |
| Master OSC FM Input | cv | — | 611 |
| Master OSC V/Oct | cv | — | 611 |
| Modulation OSC CV Input | cv | — | 611 |
| Modulation OSC FM Input | cv | — | 611 |
| Modulation OSC V/Oct | cv | — | 611 |
| Outputs (7) | |||
| Master OSC Sine Out | audio | — | 611 |
| Master OSC Square Out | audio | — | 611 |
| Master OSC Triangle Out | audio | — | 611 |
| Master Out | audio | — | Fed from a complex waveshaping circuit; blends sine to square to saw to folded sine under voltage control.611 |
| Modulation OSC Saw Out | audio | — | 611 |
| Modulation OSC Square Out | audio | — | 611 |
| Modulation OSC Triangle Out | audio | — | 611 |
Parameters 10
| Name | Type | Range | Behavior |
|---|---|---|---|
| Master OSC CV Attenuverter | knob | — | Reversing attenuator (attenuverter) on the c.v. input, controlling depth and polarity of exponential pitch modulation for the master oscillator.611 |
| Master OSC FM Attenuator | knob | — | Attenuates the f.m. input signal before it reaches the linear FM input of the master oscillator.611 |
| Master OSC Frequency | knob | 3Hz – 20000Hz | Sets the frequency of the master (right) oscillator from 3 Hz to 20 kHz.611 |
| Mod Amount | knob | — | Controls the amount of FM or AM applied from the modulation oscillator to the master oscillator. In AM mode at maximum, achieves ring-modulator-like effect.611 |
| Modulation OSC CV Attenuverter | knob | — | Reversing attenuator (attenuverter) on the c.v. input, controlling depth and polarity of exponential pitch modulation for the modulation oscillator.611 |
| Modulation OSC FM Attenuator | knob | — | Attenuates the f.m. input signal before it reaches the linear FM input of the modulation oscillator.611 |
| Modulation OSC Frequency | knob | 0.01667Hz – 500Hz | Sets the frequency of the modulation (left) oscillator, ranging from 1 cycle per minute up to 500 Hz.611 |
| Modulation Type Switch | switch | — | Selects FM (frequency modulation of master by modulation OSC), AM (amplitude modulation of master output), or Off (center/middle position).611 |
| Sync Switch | switch | — | When flipped left (toward the arrow), causes the modulation oscillator to soft sync to the master oscillator, creating useful variation in FM/AM tones.611 |
| Waveshape Select Switch | switch | — | Selects which waveform of the modulation oscillator (triangle, square, or saw) is used as the modulation source for FM or AM.611 |
Firmware history 0 versions
No firmware history recorded.
References 2
- [611]
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[612]
Verbos Complex Oscillator product pageproduct_page⚠ verified 2026-05-21 · manufacturer changed since last verified