# Moog - Subharmonicon Polyrhythm Drone - SignalPath Patch: [[Patches/Moog/Moog - Subharmonicon Polyrhythm Drone]] Build: [[Patches/Moog/Moog - Subharmonicon Polyrhythm Drone - Build|Build]] ## Overview The Subharmonicon is the organ, the Mother-32 is a second ladder held open, and Labyrinth slowly drifts two CVs. Listen at the Mother-32's rear output. ```mermaid flowchart LR Sub[Subharmonicon drone] --> M32[Mother-32 ladder] M32LFO[Mother-32 LFO TRI] --> Sub Lab[Labyrinth] -- "SEQ1" --> Sub Lab -- "SEQ2" --> M32 M32 --> Out[Mother-32 rear out] linkStyle 0 stroke:#e0b800,stroke-width:3px linkStyle 1 stroke:#1e63d6,stroke-width:3px linkStyle 2 stroke:#1e63d6,stroke-width:3px linkStyle 3 stroke:#1e63d6,stroke-width:3px linkStyle 4 stroke:#222,stroke-width:3px ``` **Cable colors:** [[Cable Colors]] after [Learning Modular](https://learningmodular.com/choosing-patch-cables/): ⚪ Gray 1 V/oct · 🔵 Blue modulation · 🟡 Yellow audio · 🔴 Red gates/triggers · 🟢 Green clock/sync · ⚫ Black external ## Why it swells in 2, 3, 5 and 7 The Subharmonicon runs four rhythms at once: 2 and 5 on SEQ 1, 3 and 7 on SEQ 2, quantized to 12-JI, with all six mixer levels up and the EG on. Attack at noon and decay past noon let the swells overlap, so the drone beats against itself. Tempo stays low. Its VCA output, at 10 V peak-to-peak, is the level the Mother-32 wants at EXT. AUDIO. ## Why the interval under VCO 1 jumps Labyrinth SEQ1 CV goes to Subharmonicon VCO 1 SUB. That is not a 1 V/oct jack, which is why the cable is blue (a judgment call in the patch note). The SUB frequency knobs are centered so the input can push both directions, as the guide says. Labyrinth runs very slow, with low CORRUPT, so the subharmonic interval drifts instead of leaping around. ## Why the ladder rolls the whole thing The Mother-32 MIX is fully toward EXT and VCA MODE is on, so it is only a filter and a held-open VCA. Its slow triangle LFO sweeps the Subharmonicon cutoff, which takes −5 to +5 V, a match for the LFO's ±5 V. Labyrinth SEQ2 CV sweeps the Mother-32 cutoff. Back the Subharmonicon CUTOFF knob off if the sweep is too wide. Labyrinth's own voice can stay down, or you can blend it in on a mixer. ## Short version The Subharmonicon is the organ, Labyrinth turns the stops, and the Mother-32 is the swell box.