doepfer/a-111-6
A-111-6 Miniature Synthesizer Voice
Complete monophonic synthesizer voice in 10HP featuring a triangle-core VCO with sub-octave, a balance/mixer unit, 24dB lowpass VCF (self-oscillating), VCA, and an AD/ADSR/AR envelope generator.715
Capabilities 4
- Envelope Generatorenvelope-generator
- AD/ADSR/AR envelope generator with LED display, Attack 1ms–5s, Decay/Release 1ms–15s, CV-controllable time parameters via CVT input.715
- Vcfvcf
- Self-oscillating 24dB/oct lowpass filter with ~11 octave frequency range (~10Hz–20kHz). Can be used as sine oscillator when VCO is off and resonance is at maximum.715
- Voltage-Controlled Amplifiervca
- VCA with special control scale: exponential from ~-90dB to -20dB, linear from ~-20dB to 0dB. Controlled by gate, envelope, or manual gain.715
- Voltage-Controlled Oscillatorvco
- Triangle-core VCO with sawtooth/triangle/rectangle waveforms, sub-octave output, 1V/oct tracking ~32Hz–4kHz.715
Jacks 10 — 8 in / 2 out
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (8) | |||
| 1V/Oct. | cv | — | External CV input for VCO frequency, 1V/octave tracking.715 |
| CV Bal. | cv | 0V to 5V | CV input for the balance unit; 0–+5V covers the full balance range when Bal. knob is fully CCW.715 |
| CVT | cv | — | CV input for envelope time control. Internal jumpers select which time parameters (A, D/R, or both) are controlled and the CV polarity direction.715 |
| Ext. In | audio | — | External audio input for the balance unit's VCA2; normalled to internal sub-octave f/2 signal when nothing is patched.715 |
| FM1 | cv | — | First CV input for VCF cutoff frequency; has attenuator, normalled to internal envelope signal.715 |
| FM2 | cv | — | Second CV input for VCF cutoff; no attenuator, ~1V/oct scaling. Can be normalled to VCO 1V/Oct via jumper for filter tracking.715 |
| Gate | gate | 5V to 12V | Gate input for envelope generator; requires min. +5V. Can be normalled to bus gate via jumper.715 |
| Mod. | cv | — | Modulation input for VCO; depth set by Mod. attenuator knob, routed to FM or PM via Dest. switch.715 |
| Outputs (2) | |||
| Envelope | cv | ≤10V | Envelope generator output, approximately +10V peak.715 |
| Out | audio | — | Audio output of the module, taken from the VCA output.715 |
Parameters 15
| Name | Type | Range | Behavior |
|---|---|---|---|
| Att | knob | 1ms – 5000ms | Sets the envelope attack time, approximately 1ms to 5 seconds. Range can be extended via the CVT input.715 |
| Bal. | knob | — | Balances between VCO output (fully CCW) and Ext. In signal (fully CW) for the VCF audio input; center gives equal levels of both.715 |
| D/R | knob | 1ms – 15000ms | Sets the envelope decay/release time, approximately 1ms to 15 seconds. Range can be extended via the CVT input.715 |
| Dest. | switch | — | Three-position switch routing the Mod. input to FM (frequency modulation), PM (pulse width modulation), or off (center).715 |
| Env. | switch | — | Three-position switch selecting envelope mode: AD (Attack-Decay), ADSR (center, sustain fixed at ~50%), or AR (Attack-Release).715 |
| FM1 | knob | — | Attenuator for the FM1 socket signal applied to VCF cutoff. Socket is normalled to internal envelope; knob sets envelope-to-filter modulation depth.715 |
| Frq. | knob | — | Manual control for the VCF cutoff frequency.715 |
| Gain | knob | — | Sets the initial (manual) gain of the VCA. Can open the VCA independently of any envelope or gate signal.715 |
| Mod. | knob | — | Attenuator knob controlling the depth of the signal at the Mod. socket, applied to FM or PM depending on Dest. switch.715 |
| Oct. | switch | -1octave – 1octave | Three-position range switch for VCO octave: -1, 0, or +1 octave.715 |
| PW | knob | ≤100% | Sets the pulse width of the rectangle waveform from 0% (output permanently low) to 100% (output permanently high). Can also be modulated via Mod. input when Dest. is set to PM.715 |
| Res. | knob | — | Manual resonance control for the 24dB lowpass VCF. Resonance extends to self-oscillation, allowing use as a sine oscillator.715 |
| Tune | knob | — | Manual pitch tune control. Range selectable via internal jumper: approximately ±10 semitones or ±3 semitones.715 |
| VCA | switch | — | Three-position switch: selects Gate, Envelope, or neither (center) as the VCA control signal. In center position, VCA amplitude is set only by the Gain knob.715 |
| Wave | switch | — | Three-position waveform switch: sawtooth, off, or triangle. The selected waveform is summed with the rectangle waveform and fed to the VCF input. Rectangle can be disabled by setting PW fully CCW or CW.715 |
Firmware history 0 versions
No firmware history recorded.
References 2
-
[715]
Doepfer A-111-6 product page (primary documentation)product_page● verified 2026-05-21
-
[716]
Doepfer A-111-6 Trimming Pots & Jumpers Supplementmanual● verified 2026-05-21