Triangle-core VCO with 1 V/oct tracking, 7-position octave switch, fifth transposition switch, and outputs for sine, triangle, saw, pulse, and vari-wave.399
Jacks 9 — 4 in / 5 out
Name
Signal
Voltage
Description
Inputs (4)
Reset
trigger
—
Hard sync input. A rising edge resets the triangle core VCO instantaneously to 0 V, affecting all outputs; oscillation then resumes as before.399
V/Oct 1
cv
—
1 V/oct exponential FM input for pitch control. Both inputs can be used simultaneously as a precision adder for transposition or combined pitch sequencing and audio-rate FM.399
V/Oct 2
cv
—
Second 1 V/oct exponential FM input. Both V/Oct inputs serve as a built-in precision adder.399
Vari-Wave CV
cv
≤5V
Modulates the vari-wave parameter over a 5 V range; basic waveforms are separated by 1.25 V intervals. Can modulate up to audio frequencies.399
Outputs (5)
Pulse Out
audio
-5V to 5V
Pulse wave output at 10 Vpp. Duty cycle is continuously modulated between 50% (square) and 99% (near-silence) as the vari-wave parameter is adjusted.399
Saw Out
audio
-5V to 5V
Sawtooth wave output at 10 Vpp. Independent of vari-wave setting.399
Sine Out
audio
-5V to 5V
Sine wave output at 10 Vpp. Independent of vari-wave setting.399
Triangle Out
audio
-5V to 5V
Triangle wave output at 10 Vpp. Independent of vari-wave setting.399
Vari-Wave Out
audio
—
Morphing waveform output; a blend of two adjacent basic waveforms (sine/triangle/saw/square/pulse) as set by the vari-wave knob and CV.399
Parameters 5
Name
Type
Range
Behavior
Fifth Switch
switch
—
Adds 7 semitones (a perfect fifth) to the current pitch when switched down. Combined with the fine knob, allows any pitch to be reached across the full frequency range.399
Fine Frequency Knob
knob
≤7semitone
Fine-tunes pitch over a total range of 7 semitones. When centred with fifth switch disabled, module is tuned to C.399
Frequency Range Switch
switch
—
Selects between VCLFO (low frequency) and VCO (audio frequency) operating ranges.399
Octave Switch
switch
1octave – 7octave
7-position rotary switch that sets oscillation frequency in octave steps; advancing one position clockwise doubles the frequency. In audio mode, covers C1 (33 Hz) to C7 (2.1 kHz).399
Vari-Wave Knob
knob
—
Smoothly morphs the vari-wave output from sine to triangle to saw to square and finally to a narrow pulse (max ~98% duty cycle). Pips on the knob scale mark each basic waveform position.399