DUB STAB PLAITS

Jacks

1. Patch AUX to your synth’s V/OCT. Hold both buttons 2 s.
2. AUX alternates every 2 s: C3 (0 V, LEDs 1–4 green) and C5 (+2 V, LEDs 5–8 green). OUT plays the same notes as a sine.
3. Tune your synth so the low note is a C, then turn FREQUENCY until the high note is exactly two octaves above. The red LED shows the trim.
4. Tap a button to save.

Range about −2 V to +3 V. If a held note slowly sinks back to 0 V, that module’s output is AC-coupled and the CV can’t work on it.

• Needs Live 12 Suite, or Live with Max for Live. Drag a .amxd onto a track and press Play: the sequencer follows Live’s transport.
• CHORDS switch: on, the sequencer plays chords; off, it plays mono notes — a line in the scale that follows the chord progression.
• Voicing: DUB (root 5th 7th 3rd 5th), Triads, 7ths (any inversion), Mixed, or DEEP — the G minor firmware’s open dub techno shapes (Root G + DEEP = the same chords). Density, Steps, Rate 1/2–1/32T, Octave.
• Seed: the pattern is made from a number and saved with your set. Two devices on the same seed play the same pattern — one for chords, one for the ACID line.
• A played MIDI note transposes the pattern within the scale (C3 = no change), like V/OCT on the module.
• Models: DUB SAW, VA, WAVESHAPE, FM, PHASE DIST, VHIKK, STRINGS (own string machine with ensemble), ACID. Drift = the slow random LFO.
• NEW MELODY: a new mono line and ACID line over the same chords. RANDOM: new Harmonics, Timbre and Morph, like holding RIGHT on the module.
• Grainy dark grey panels, yellow sequencer knobs, blue synth knobs and a small green phosphor oscilloscope.
• Dry, like the module: add Live’s Echo and Hybrid Reverb after it.

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v1.0

First release. Generative dub techno stabs in key, 8 chord models (model 7 STRING MACHINE, model 8 ACID bass line one octave above the chords), 16-step sequencer on the attenuverters, clean levelled output, AUX = 1 V/oct root CV with CV TUNE, HARMO · TIMBRE · MORPH CV attenuated to ±15 %. Android app with tape echo and reverb.

v1.1

Two versions: C minor (all 7 chords, DUB voicing) and C minor DEEP — open dub techno shapes: DUB m7, open m9, stacked 4ths (m11), 7sus4, sus2, fifths, open minor, m(add9), one shape per pattern most of the time, no major chords. Hold RIGHT switches each model between chords and single notes (ACID: mono line or acid chords) instead of randomising the knobs. The model LED shows it: yellow = chords, red = single notes.

v1.2

Both versions (C minor and Cm DEEP): starting the TRIG clock starts the sequencer from step 1. When the clock stops (no pulse for 4 clock periods, between 0.5 and 4.5 s) it goes back to the first step and waits; plugging the clock in does the same. Short hiccups in the clock do not reset it.

v1.3

Model 6 is now VHIKK, inspired by the Forge TME Vhikk X (CHIPTUNE is gone; every other model and the sequencer are unchanged): a carrier / modulator pair per chord note and its own space. HARMONICS = WARP (left phase modulation, noon clean, right ring modulation), TIMBRE = carrier feedback (sine → warm saw-like), MORPH = SPACE: a dark comb echo tuned to the chord that glides from chord to chord, and past noon a frequency shifter in its loop that makes the repeats spiral. FREQUENCY stays the envelope. Firmware and both apps v1.3. VHIKK demo.

v1.4

Cleaner output: with FREQUENCY to the right (long attacks and decays), stacked chords could push the output stage into soft clipping. The level limiter now catches every peak at once and holds it, so the sound stays clean at any envelope setting. A voice taken over by a new chord no longer jumps in level. Firmware and both apps v1.4.

v1.5

Lighter on the Plaits processor: the chord voices now compute their envelopes once per block instead of once per sample, the oscillators wrap their phases without branches, and the limiter no longer divides on every sample. The busiest models use 8–17 % less CPU (FM 7644 → 6355 instructions per block, VHIKK with space and shifter peak 10506 → 9579, out of 18000), leaving more headroom so the module never drops audio under heavy CV and fast clocks. Same sound, same controls. Firmware and both apps v1.5.

app 1.0.1

Screen recordings now include the app’s sound (Android “record device audio”).

M4L 1.0

Max for Live devices: Dub Stab MIDI, Dub Stab Synth, Dub Stab Plaits — root, four minor scales, minor chords only, CHORDS on/off (mono notes).

Source: the firmware patch against pichenettes/eurorack, build scripts, emulator tests and the app — see the README.