VA2XP

Modulaire Maritime 8HP
MIXER VCA I/O UTILITY

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Voltage-controlled 4-channel stereo enhancer-mixer and output module with cue/headphone amp. Channel 1 combines stereo VC crossfade and VC pan with independent CVs, channels 2-3 add VC pan to stereo pairs, and channel 4 is a stereo level input.

Patch Ideas · 5

★ Two-source VC crossfader (channel 1)
Use channel 1 as a dedicated VC crossfader between two voices, with pan knob centered so the blend sits in the middle of the stereo field.
Walkthrough
  1. Patch Voice A into VA2XP Channel 1 In L.
  2. Patch Voice B into VA2XP Channel 1 In R.
  3. Patch a slow LFO or envelope into VA2XP Channel 1 Crossfade CV.
  4. Leave Channel 1 Pan CV unpatched; set Pan knob to center (12 o'clock).
  5. Turn Channel 1 Level/Crossfade knob to about 12 o'clock to set crossfade depth.
  6. Patch VA2XP Main Out L and Main Out R to your monitors or recorder.
Signal out Main Out L/R — the two voices morphing smoothly into each other under CV control.
Listen for Voice A fades out as Voice B fades in, following the LFO/envelope. Turning the Level/Crossfade knob toward either side biases the blend; opening Pan CV adds stereo motion on top.
▸ Show diagram
Patch diagramPatch diagram with 5 modules and 5 connections. Modules: VA2XP, LFO, Output, Voice A, Voice B. Signals: 4 audio, 1 cv.VA2XPLFOOutputVoice AVoice BChannel 1 In LaudioChannel 1 In RaudioChannel 1 Crossfade CVcvMain Out LaudioMain Out RaudioOutcvLaudioRaudioOutaudioOutaudioaudiocv
★ Mono-to-stereo spread
Patch one mono voice to channel 1 L only and use the pan CV to turn it into a wide, moving stereo image.
Walkthrough
  1. Patch a mono VCO (or full voice) into VA2XP Channel 1 In L only; leave In R unpatched.
  2. Patch a slow triangle LFO into VA2XP Channel 1 Pan CV.
  3. Leave Channel 1 Crossfade CV unpatched.
  4. Set Channel 1 Level/Crossfade to about 12 o'clock so the mono source is at full level.
  5. Start with Channel 1 Pan knob centered, then nudge it while the LFO runs.
  6. Patch VA2XP Main Out L/R to your monitors.
Signal out Main Out L/R — the mono voice now moving across a stereo field.
Listen for The voice drifts left and right with the LFO. Faster LFO = a classic autopanner; slower LFO = long, cinematic width breathing. Try an envelope as CV to sweep per note.
▸ Show diagram
Patch diagramPatch diagram with 4 modules and 4 connections. Modules: VA2XP, VCO, LFO, Output. Signals: 3 audio, 1 cv.VA2XPVCOLFOOutputChannel 1 In LaudioChannel 1 Pan CVcvMain Out LaudioMain Out RaudioOutaudioOutcvLaudioRaudioaudiocv
Four-voice animated panorama
Four voices across channels 1-4, three of them animated by different modulation sources so the mix constantly shifts in the stereo field.
Walkthrough
  1. Patch Voice 1 into Channel 1 In L (mono), Voice 2 into Channel 2 In L, Voice 3 into Channel 3 In L, Voice 4 stereo into Channel 4 In L and In R.
  2. Patch slow LFO 1 into Channel 1 Pan CV.
  3. Patch slow LFO 2 into Channel 2 Pan CV.
  4. Patch a random or S&H source into Channel 3 Pan CV.
  5. Set all pan knobs to center; set channel 4 Level to taste to anchor the mix.
  6. Patch VA2XP Main Out L/R to your monitors.
Signal out Main Out L/R — a four-voice mix where three voices pan on their own schedules while channel 4 stays locked as the center anchor.
Listen for A living stereo field: each pan CV has a different rate/shape so voices never sweep in the same direction at once. Channel 4 keeps the mix grounded so the motion feels musical rather than chaotic.
▸ Show diagram
Patch diagramPatch diagram with 9 modules and 10 connections. Signals: 7 audio, 3 cv.VA2XPLFO 1LFO 2RandomOutputVoice 1Voice 2Voice 3Voice 4Channel 1 In LaudioChannel 2 In LaudioChannel 3 In LaudioChannel 4 In LaudioChannel 4 In RaudioChannel 1 Pan CVcvChannel 2 Pan CVcvChannel 3 Pan CVcvMain Out LaudioMain Out RaudioOutcvOutcvOutcvLaudioRaudioOutaudioOutaudioOutaudioOut LaudioOut Raudioaudiocv
Cue preview bus for live sets
Keep the audience mix on Main Out L/R while you audition the next patch privately on headphones using the Cue input.
Walkthrough
  1. Patch Drums into Channel 2 In L/R and Synth into Channel 3 In L/R so they're in the main mix.
  2. Patch the source you want to preview (a new voice, a click track, or a cued loop) into VA2XP Cue In.
  3. Press the Cue/Mix button so it's set to Cue.
  4. Raise the Headphone Level knob until you can hear the cue source clearly.
  5. Patch VA2XP Main Out L/R to the PA and VA2XP Headphones to your headphones.
  6. Press the button back to Mix when you want to monitor the audience mix instead.
Signal out Main Out L/R — the audience/house mix; Headphones — the Cue source (or the mix) depending on the button.
Listen for The PA keeps playing unchanged while you solo the cued signal in your headphones. Flip the button and the headphones snap back to the full mix — perfect for DJ-style previewing during a modular set.
▸ Show diagram
Patch diagramPatch diagram with 6 modules and 8 connections. Modules: VA2XP, Drums, Synth, Click, PA, Phones. Signals: 8 audio.VA2XPDrumsSynthClickPAPhonesChannel 2 In LaudioChannel 2 In RaudioChannel 3 In LaudioChannel 3 In RaudioCue InaudioMain Out LaudioMain Out RaudioHeadphonesaudioOut LaudioOut RaudioOut LaudioOut RaudioOutaudioLaudioRaudioInaudioaudio
★ Crossfade + pan on the same voice
Exploit channel 1's unique dual-CV layout: modulate the L/R crossfade with an envelope while a separate LFO pans the result.
Walkthrough
  1. Patch a bright VCO into Channel 1 In L and a dark filtered version of the same VCO into Channel 1 In R.
  2. Patch an envelope (triggered per note) into Channel 1 Crossfade CV so each note opens from dark to bright.
  3. Patch a slow sine LFO into Channel 1 Pan CV for ambient left/right drift.
  4. Set Channel 1 Level/Crossfade to 12 o'clock and Pan knob to center.
  5. Patch VA2XP Main Out L/R to your monitors.
Signal out Main Out L/R — a single voice whose tone morphs per note while its position drifts in the field.
Listen for Every note opens dark-to-bright as the envelope crossfades the two timbres, and the whole voice slowly sweeps across the stereo image on the LFO. Two dimensions of motion from one mixer channel.
▸ Show diagram
Patch diagramPatch diagram with 6 modules and 6 connections. Modules: VA2XP, VCO bright, VCO dark, Env, LFO, Output. Signals: 4 audio, 2 cv.VA2XPVCO brightVCO darkEnvLFOOutputChannel 1 In LaudioChannel 1 In RaudioChannel 1 Crossfade CVcvChannel 1 Pan CVcvMain Out LaudioMain Out RaudioOutaudioOutaudioOutcvOutcvLaudioRaudioaudiocv

Behaviors

Independent crossfade and pan on channel 1 channel 1 used with separate Crossfade CV and Pan CV

The two CVs do different jobs at the same time: Crossfade CV moves the balance between L and R sources, while Pan CV places that result in the stereo field. You can modulate one, both, or neither.

Mono-to-stereo behavior on channels 1-3 only the L input of channels 1, 2 or 3 is patched

With a single mono source patched to L, the channel becomes a VC-level stereo channel whose position in the field is controlled by the pan CV and/or pan knob.

Stereo twist on channels 2 and 3 channels 2 or 3 receive a stereo pair and pan CV

Unlike a standard pan law, the left and right sides move/twist against each other as CV moves, producing a motion image rather than a simple balance shift.

Channel 4 as stereo return stereo source patched into channel 4 L and R

Channel 4 is a clean stereo level stage with no pan and no CV, making it the natural place for a bus return, click track or premixed stem.

Independent cue monitoring cue/mix button set to Cue

The signal on Cue In is routed only to the headphone amp, never into the Main Outs, so you can audition sources privately during a live set.

Per-channel LED metering signal present on any channel

Front-panel LEDs indicate activity on every channel, so gain staging and CV-driven pan movement are visible even when the mix is feeding headphones or a downstream mixer.

Controls

Channel 1 Channel 1 Level / Crossfade Sets intensity and level of the crossfader between the L and R inputs.
manual crossfade depth
Channel 1 Channel 1 Pan Places the crossfade mix toward left or right of the stereo field.
manual pan
Channel 2 Channel 2 Pan Manual pan position for channel 2's stereo pair.
manual pan
Channel 3 Channel 3 Pan Manual pan position for channel 3's stereo pair.
manual pan
Channel 4 Channel 4 Level Manual level for the stereo input channel (no CV, no pan).
stereo level only
Global Cue / Mix Button Toggles whether the headphone output monitors the Cue input or the main Mix.
push-button select
Global Headphone Level Sets the headphone amplifier output level.
monitor level

I/O

IN · 13

  • Channel 1 In L audio CV
    Left (or mono) input for channel 1. If only L is patched, the module creates a stereo image controllable by pan CV.
  • Channel 1 In R audio AUDIO
    Right input for channel 1. With both L and R patched, channel 1 acts as a VC crossfader between the two sources.
  • Channel 1 Crossfade CV CV CV
    CV that moves the crossfade position between L and R on channel 1, independently of pan CV.
  • Channel 1 Pan CV CV CV
    CV that places the crossfade result left or right in the stereo field; polarity/strength determines distance from center.
  • Channel 2 In L audio AUDIO
    Left (or mono) input for channel 2's stereo pair.
  • Channel 2 In R audio CV
    Right input for channel 2. Under pan CV the L and R sides twist across the stereo field.
  • Channel 2 Pan CV CV CV
    CV control of channel 2's stereo pan.
  • Channel 3 In L audio AUDIO
    Left (or mono) input for channel 3's stereo pair.
  • Channel 3 In R audio CV
    Right input for channel 3. Under pan CV the L and R sides twist across the stereo field.
  • Channel 3 Pan CV CV CV
    CV control of channel 3's stereo pan.
  • Channel 4 In L audio CV
    Left (or mono) input for channel 4, a level-only stereo channel with no pan and no CV.
  • Channel 4 In R audio AUDIO
    Right input for channel 4.
  • Cue In audio AUDIO
    Dedicated cue input that can be auditioned on headphones without reaching the main outputs when the front-panel button is set to Cue.

OUT · 3

  • Main Out L modular / line level AUDIO
    Main stereo output, left channel. Sum of all four channels.
  • Main Out R modular / line level AUDIO
    Main stereo output, right channel. Sum of all four channels.
  • Headphones headphone level
    Stereo headphone amplifier output; monitors Mix or Cue depending on the button state.