# Main - Haptic Grain Scrubber Case: **Eurorack 001 Installed** (main rack). Each module is used once. Source: original Jack labels from the Beads and Stages manuals, the BeetTweek User Manual v1.14 (Ratchet Mode), the Mother-32 Users Manual, and ladik.eu (A-540). Synthrotek Echo jack silk-screen: check panel. Signal path explained: [[Patches/Main - Haptic Grain Scrubber - SignalPath|SignalPath]] ## Modules - Moog Mother-32: source material (any sequence) - Mutable Instruments Beads: frozen buffer and grains - subMatrix BeetTweek: Ratchet Mode, hand scrubbing - Mutable Instruments Stages: slow LFO on grain pitch (segment 1) - Synthrotek Echo: PT2399 echo on the left side - Ladik A-540: stereo out **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 ## Cables 1. 🟡 Yellow · Mother-32 VCA (out) -> Beads IN L 2. 🔵 Blue · BeetTweek A (out; Ratchet Mode, spring-trail augment set to −5 V to 5 V) -> Beads TIME CV input (6) 3. 🔵 Blue · Stages output 1 (segment 1, looping RAMP) -> Beads PITCH CV input (6) (judgment call) 4. 🟡 Yellow · Beads L (out) -> Echo audio input (check panel) 5. 🟡 Yellow · Echo output (check panel) -> A-540 channel A input 6. 🟡 Yellow · Beads R (out) -> A-540 channel B input ## Starting points - **Mother-32:** run any busy 16-step pattern with a bright filter. Once Beads has a bar or two of it in the buffer, stop the sequencer or turn its VOLUME down. - **Beads:** - Latched grains, the power-on default. DENSITY 2 o'clock, SIZE 1 o'clock. - Engage FREEZE once the buffer has the material. - TIME attenurandomizer CW of 12, about 2 o'clock, so the BeetTweek CV moves it. PITCH attenurandomizer at 1 o'clock for a slight wobble only. - DRY/WET fully CW, since the input is frozen anyway. REVERB 12 o'clock, FEEDBACK CCW. - **BeetTweek:** pick Ratchet Mode with the MODE button. Set output A's augment to spring trail −5 V to 5 V with the button next to A. Turn the knob against the ratchet: the further you wind it, the further back in the buffer the grains read. Let go and it springs back. - **Stages:** segment 1 on RAMP, looping (hold [B] for one second), slider about two-thirds up for a slow cycle. - **Echo:** Rate 12 o'clock, Feedback 11 o'clock, Mix 10 o'clock. ## What it should sound like A frozen snapshot of the Mother-32 line, smeared into grains. Pushing the BeetTweek against its spring scrubs back through the snapshot, and you feel the pull in your hand. The left side gets a dark, warbly PT2399 echo; the right stays clean.