bohm

Ohmforce Bohm

Programmable stereo kick synth with 9 swappable models and 32 programs

18 HP Eurorack module

Bohm is a stereo dual-voice Eurorack kick drum synthesizer built around a fully programmable DSP engine. Each of its preloaded "models" (FM-2X, HZ-1, OLP4, PM-K1, PX3, SP-6, VX-T, WT-4, XT-88, plus HPN coming soon) is a large patch built from ~400 internal modules, so every front-panel knob controls a different macro depending on which model is loaded. Bohm stores 32 programs of 16 snapshots each, supports three running modes (Studio, Song, Jam), accepts CV randomization, and reads firmware/wavetables/samples from a microSD card.

Features

  • 9 swappable kick synthesis models (FM-2X, HZ-1, OLP4, PM-K1, PX3, SP-6, VX-T, WT-4, XT-88) plus HPN coming soon
  • Per-model variation menus (RATIO, WT, CLK, WF1/WF2, algorithm, etc.) accessed via Function encoder
  • 32 programs of 16 snapshot steps each, holding model + variations + knob positions
  • Three running modes: Studio (production), Song (sequenced live), Jam (free live)
  • Per-program follow actions (Loop / End / jump-to-program)
  • Per-knob options per program: Latch (LAT), Relative (REL), Override (OVR)
  • FUNCTION CV randomization of current variations (Studio mode)
  • ATTVERT 2 system option to retarget Sustain CV attenuverter to Velocity CV
  • Configurable PITCH CV: free-scan or 1V/Oct tracking over a chosen octave window
  • 7 post-effects (TUBE, BASS, SOFT, HARD, WAVEFOLD, BITCRUSH, DECIM) selectable per snapshot
  • STEREO variation per Bohm/Groove for 0–100% stereo width
  • System Post-EQ (low shelf + peak + high shelf) for tuning to club PAs without per-snapshot edits

Controls & Jacks (31)

  • Length— Sets the overall length of the kick sound
  • Sustain— Kick sustain volume level
  • OLED— Model browser, variation menus, snapshot management, system settings
  • Curve— Pitch envelope curve, 808-style CCW to 909-style CW
  • Function— Selects assignable function controlled by the Function knob
  • Trs Decay— Transient tone filter, dark CCW to bright CW
  • Status— Status indicator near Hit button
  • Hit— Manual kick trigger, hold for gate behavior
  • Hit In— Manual kick trigger, hold for gate behavior
  • Pitch CV In— CV input for pitch modulation
  • Out L— output audio
  • Function CV In— Output for the assignable function envelope
  • Velocity— input cv
  • Out R— Right audio output
  • Attack— Controls the attack transient intensity
  • Pitch— Sets the fundamental pitch of the kick
  • Color— Adjusts the tonal color and harmonic content
  • FX— Controls the effect send level
  • FX CV Input— CV input for FX parameter
  • Curve CV Input— CV input for color parameter
  • Length CV Input— CV input for length parameter
  • Attack CV Input— CV input for attack parameter
  • TRS Decay Input— CV input for transient decay
  • TRS Tone Input— CV input for transient tone
  • Trs Tone— Wavetable position / timbre of sub-bass oscillator, model-specific
  • Color CV Input— Secondary CV input for color parameter
  • Length CV Att
  • Sustain CV Att
  • Pitch CV Att
  • Color CV Att
  • Sustain CV In

How-To Guides

  • First kick from a clock
  • 808-style sub kick
  • FM-2X techno kick
  • V/Oct bass line
  • Save a kick snapshot
  • Set up a Song mode performance
  • CV-randomize current variations
  • Backup state to microSD

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

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