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.
