bohm-groove

Ohmforce Bohm Groove

Clock-driven secondary kick voice + tap envelope generator

10 HP Eurorack module

Bohm Groove is the 10HP rhythm/secondary-voice expander for the Bohm kick system. On every CLOCK trigger Groove fires a "tap": its volume envelope is shaped by knobs 2, 3 and 4 plus the TAPS CV input. Behind the 4 sound generators (kick repetitions, reverb, noise, gritty noise + sub) the Groove engine borrows the active Bohm model and re-synthesizes it with its own LENGTH and PITCH (relative to Bohm), driven through a selectable FX (LP/HP/BP/DIST). Groove is not supported on every model — OLP4 and PM-K1 are excluded; HPN replaces repetitions with a wavetable-sequence generator. The TAPS CV output emits the generated envelope (or Bohm/Performer envelopes via TAPS OUT system option) so other modules can be modulated in sync.

Features

  • Secondary kick voice triggered by CLOCK input (typically 16th-note clock)
  • 4-tap volume envelope shaped by Tap 2 / Tap 3 / Tap 4 knobs (downbeat tap is fixed)
  • TAPS CV input shapes the envelope further between HITs (useful at fast tempos with >4 clocks per HIT)
  • TAPS CV Out emits the generated Groove envelope; switchable to Bohm (or inverted) or Performer via TAPS OUT system option
  • 4 selectable sound sources via COLOR: Bohm-model repetitions, reverb, noise, gritty noise + sub
  • LENGTH and PITCH are RELATIVE to Bohm: center = same as Bohm, never below Bohm minimum or above Bohm maximum
  • LENGTH only affects the repetition source (~3 o-clock to fully CW)
  • FX block: LP, HP, BP filters or DIST distortion (selected from Bohm Function variations)
  • STEREO variation controls Groove stereo width 0% to 100%
  • GRV ENV system option: FALL (envelope decays after tap 4) or SUSTAIN (drone-style hold)
  • 2 attenuverter trims for FX CV and COLOR CV (4 trims total in calibration order: knobs + trims)
  • On HPN model: Groove plays a random pitched sequence instead of repetitions, with SEQ LEN / SEQ SEED / SCALE / SOFTEN variations

Controls & Jacks (19)

  • Tap 2
  • Tap 3
  • Tap 4
  • Length
  • Pitch
  • FX
  • Color
  • Vol
  • FX CV Att
  • Color CV Att
  • Status
  • FX CV
  • Clock
  • Color CV
  • Vol CV
  • Length CV
  • Pitch CV
  • Taps CV In
  • Taps CV Out

How-To Guides

  • Classic Techno Rumble
  • Pitched-Down Sub Rumble
  • Rhythmic Noise Texture
  • Tap Envelope as External Modulation
  • Drone Groove (Sustain Mode)
  • Shape Envelope with Taps CV
  • Calibrate Groove

Explore the interactive Bohm Groove panel on BleepDex — tap any control to learn what it does.

8c571ce