doepfer/a-110-1
A-110-1 Standard VCO
Voltage-controlled oscillator producing four waveforms simultaneously (square, sawtooth, triangle, sine) with a frequency range of about ten octaves, controlled by Range switch, Tune knob, and CV inputs.205
Capabilities 3
- Hard Synchard-sync
- Hard sync input resets slave VCO waveform on each master VCO cycle; produces harmonic sidebands when slave frequency is higher than master.205
- Pulse Width Modulationpwm
- Square wave pulse width controllable manually via PW knob or by voltage via two PWM inputs (PW CV 1 and PW CV 2), with an attenuator on PW CV 2.205
- Voltage-Controlled Oscillatorvco
- 205
Jacks 9 — 5 in / 4 out
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (5) | |||
| CV 1 | cv | — | Primary CV input for VCO pitch control, following 1V/octave standard. Normalled to internal bus CV; inserting a patch cable disconnects the bus CV.205 |
| CV 2 | cv | — | Secondary CV input for VCO pitch/FM; level adjustable via CV 2 attenuator. Summed with CV 1. Typically used for FM (vibrato, auto-bend, etc.).205 |
| PW CV 1 | cv | — | Pulse width modulation CV input 1. Voltages from PW CV 1 and PW CV 2 are summed to modulate the square wave pulse width.205 |
| PW CV 2 | cv | — | Pulse width modulation CV input 2; level adjustable via PW CV 2 attenuator knob. Summed with PW CV 1.205 |
| SYNC | audio | — | Hard sync input. Resets the slave VCO's waveform to the beginning of a cycle whenever the master VCO starts a new cycle.205 |
| Outputs (4) | |||
| Sawtooth | audio | — | 205 |
| Sine | audio | — | 205 |
| Square | audio | — | Square/rectangle wave output. Pulse width adjustable manually or via CV. At 50% pulse width, only odd harmonics are present.205 |
| Triangle | audio | — | 205 |
Parameters 5
| Name | Type | Range | Behavior |
|---|---|---|---|
| CV 2 | knob | — | Attenuates the control voltage at CV 2 input before it is summed with CV 1 to control VCO pitch.205 |
| PW | knob | — | Manually sets the pulse width of the square wave output. Can also be modulated via PW CV inputs.205 |
| PW CV 2 | knob | — | Sets the gain of the PW CV 2 input signal affecting pulse width modulation of the square wave.205 |
| Range | switch | -2octave – 2octave | Sets footage (octave of the fundamental) in five steps over a wide frequency range.205 |
| Tune | knob | -0.5octave – 0.5octave | Enables fine tuning of the oscillator frequency. Useful for detuning one oscillator relative to another when multiple oscillators share the same CV.205 |
Firmware history 0 versions
No firmware history recorded.
References 2
- [205]
- [206]