T10 VC4

Thonk Synth 4HP
VCA MIXER

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Quad linear DC-coupled VCA. Four identical channels with individual outputs, A+C and B+D mix outputs, and +5V-normalled CV inputs for manual-open behavior when unpatched.

Patch Ideas · 3

Four-voice VCA mix
Four voices into IN A-D · four envelopes into CV A-D · A+C MIX to the left bus · B+D MIX to the right bus · a tiny quad stem mixer with no menu layer.
▸ Show diagram
Patch diagramPatch diagram with 10 modules and 10 connections. Signals: 6 audio, 4 cv.T10 VC4VCO 1VCO 2VCO 3VCO 4Envelope 1Envelope 2Envelope 3Envelope 4OutputIN AaudioIN BaudioIN CaudioIN DaudioCV AcvCV BcvCV CcvCV DcvA+C MIXaudioB+D MIXaudioOutaudioOutaudioOutaudioOutaudioOutcvOutcvOutcvOutcvLaudioRaudioaudiocv
Stereo drum stem
Kick and snare on A/B · hats and percussion on C/D · use the two mix buses as left/right stems · the individual outs remain available for separate processing.
▸ Show diagram
Patch diagramPatch diagram with 6 modules and 8 connections. Modules: T10 VC4, Kick, Snare, Hats, Perc, Output. Signals: 8 audio.T10 VC4KickSnareHatsPercOutputIN AaudioIN BaudioIN CaudioIN DaudioOUT AaudioOUT BaudioA+C MIXaudioB+D MIXaudioOutaudioOutaudioOutaudioOutaudioKick tapaudioSnare tapaudioLaudioRaudioaudio
Manual-open modulation hub
Leave CV A-D empty to open all four channels · patch audio or CV into the inputs · use the module as a passive-feeling four-channel level hub with the +5V normals doing the lifting.
▸ Show diagram
Patch diagramPatch diagram with 5 modules and 5 connections. Modules: T10 VC4, LFO 1, LFO 2, Filter, Output. Signals: 3 audio, 2 cv.T10 VC4LFO 1LFO 2FilterOutputIN AaudioIN CaudioOUT AcvOUT CcvA+C MIXaudioOutaudioOutaudioCutoffcvPan CVcvInaudioaudiocv

Behaviors

Four linear VCAs signal into IN A-D

The module behaves as four independent linear VCAs. Each channel is DC coupled, so it is equally happy with audio, envelopes or slow control voltages.

Open when unpatched CV jack left empty

Each CV input is normalled to +5V. That means an unpatched channel is fully open and acts like a straight-through mixer path until CV is inserted.

A+C subgroup use A+C MIX

Channels A and C sum to a dedicated subgroup output. That makes the left pair an instant stereo or stem bus when you want two voices glued together.

B+D subgroup use B+D MIX

Channels B and D form the second subgroup output. When A+C is left unpatched, those channels are inverted into the B+D bus for a wider composite mix.

Individual taps stay live patch OUT A-D

Taking an individual output does not remove the channel from the mix outputs. You can split a channel to a separate destination and keep it in the summed bus at the same time.

Controls

I/O

IN · 8

  • IN A -10V to +10V AUDIO
    Signal input for channel A.
  • IN B -10V to +10V AUDIO
    Signal input for channel B.
  • IN C -10V to +10V AUDIO
    Signal input for channel C.
  • IN D -10V to +10V AUDIO
    Signal input for channel D.
  • CV A 0V to +5V CV
    CV input for channel A. Normalled high when unpatched.
    NORM → +5V
  • CV B 0V to +5V CV
    CV input for channel B. Normalled high when unpatched.
    NORM → +5V
  • CV C 0V to +5V CV
    CV input for channel C. Normalled high when unpatched.
    NORM → +5V
  • CV D 0V to +5V CV
    CV input for channel D. Normalled high when unpatched.
    NORM → +5V

OUT · 6

  • OUT A -10V to +10V
    Individual output for channel A. Still contributes to the mix outputs when patched.
  • OUT B -10V to +10V
    Individual output for channel B. Still contributes to the mix outputs when patched.
  • OUT C -10V to +10V
    Individual output for channel C. Still contributes to the mix outputs when patched.
  • OUT D -10V to +10V
    Individual output for channel D. Still contributes to the mix outputs when patched.
  • A+C MIX -10V to +10V
    Mix of channels A and C.
  • B+D MIX -10V to +10V
    Mix of channels B and D, with A+C inverted into the bus when A+C is left unpatched.