# Crossover - Subharmonicon Plays the Seahorse - SignalPath Patch: [[Patches/Crossover - Subharmonicon Plays the Seahorse]] ## Overview The Subharmonicon writes two polyrhythmic string lines on the SeaHorse, Plaits and Rings, and also plays its own low drone. Shades mixes the strings, the Disting is the room, and the A-541 plus the Subharmonicon's rear output are the exits. ```mermaid flowchart LR Sub[Subharmonicon] -- "SEQ 1" --> P[Plaits string] Sub -- "TRIGGER" --> P Sub -- "SEQ 2" --> R[Rings string] Sub -- "SEQ 2 CLK" --> R P --> Sh[Shades mix] R --> Sh Sh --> D[Disting L-2 reverb] D -- "A / B" --> O[A-541 line out] Sub --> Out[Subharmonicon rear out] linkStyle 0 stroke:#9e9e9e,stroke-width:3px linkStyle 1 stroke:#d62828,stroke-width:3px linkStyle 2 stroke:#9e9e9e,stroke-width:3px linkStyle 3 stroke:#d62828,stroke-width:3px linkStyle 4 stroke:#e0b800,stroke-width:3px linkStyle 5 stroke:#e0b800,stroke-width:3px linkStyle 6 stroke:#e0b800,stroke-width:3px linkStyle 7 stroke:#e0b800,stroke-width:3px linkStyle 8 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 two string lines sit on different grids Quantize is 8-ET, diatonic. Rhythms 2 and 4 are assigned to SEQ 1, 3 and 6 to SEQ 2. SEQ 1 goes to Plaits V/OCT, and TRIGGER fires Plaits, which is on the inharmonic string model. SEQ 2 goes to Rings V/OCT, and SEQ 2 CLK strums Rings, a string resonator at polyphony 2, tuned an octave above Plaits. The SEQ jacks carry only the step offsets, so each voice's root is set with its FREQUENCY knob. SEQ outs are ±5 V, and the CLK and TRIGGER outs are 0 to 5 V pulses, which Plaits TRIG and Rings STRUM read fine. ## Why the drone sits under the strings The Subharmonicon mixer levels stay low, around 10 o'clock, so its own just-intoned drone is a bed, not a lead. That sound leaves from its rear 1/4″ output, separate from the SeaHorse's A-541 path. ## Why it's in a stereo room Shades mixes Plaits and Rings into Disting L-2, a mono-to-stereo reverb with a medium size and the default feedback, Z positive about a third of the way. The cases run on separate supplies. If you get hum when you join them, look at grounding before blaming the patch. ## Short version The Subharmonicon is the conductor, Plaits and Rings are the string section, and the Disting is the hall.