Bohm looks much deeper than a simple kick module. Since it’s a stereo dual-voice kick system with different internal models, plus optional Groove and Performer expanders, the best approach is to treat it like a bass/percussion voice rather than only a drum source.
From the manual, the key sound-shaping controls are:
And the important note is that controls behave differently depending on the selected model, so the most interesting results will come from: 1. choosing a model, 2. sending modulation to several parameters at once, 3. using the module’s pitch and decay behavior as the basis for timbre.
For Bohm, I’d think in 3 modulation rates:
Change something every hit: - velocity accents - pitch amount - decay length - color/tone per step
This is how you get alive, animated percussion instead of static kicks.
Use envelopes to shape timbre over the course of each sound: - short envelope to PITCH for punch - longer envelope to COLOR or FX for evolving body - envelope to SUSTAIN or LENGTH for bass articulation
Use slow movement for atmosphere and instability: - drift TRS TONE - slowly modulate CURVE - stereo movement through FX or Performer processing
This is how you push it into pads, evolving drones, and ominous textures.
Bohm should be excellent for industrial percussion, smashed kicks, metallic hits, and broken drum machine sounds.
Start with a model that already has strong low-end or aggressive transient behavior.
You’ll get kick hits that shift between: - tight thump - crunchy knock - blown-out slam - resonant industrial toms
If the selected model reacts strongly to COLOR or FX, this can get very nasty in a good way.
Even though Bohm is kick-focused, fast pitch and tone modulation can push it into hybrid percussion.
You can get: - zap-like hits - electro percussion - woody clicks - distorted rim / tom hybrids
If Groove is installed, layer the second voice slightly offset in timing for flammed percussion or rumble tails.
Even without explicit FM in the manual, very fast modulation of pitch-related parameters can fake FM-ish percussion.
The pitch envelope and curve interaction can create: - laser hits - metal punch - tearing impacts - aggressive “speaker rip” attacks
Use a VCA or attenuator because too much pitch envelope will just sound cartoony.
The manual says Groove adds a secondary kick voice for techno rumbles and layered percussion. That means you can design one voice as the transient and the other as the dirt/body.
Main Bohm voice - short - punchy - more attack - less sustain
Groove voice - lower tuned - longer decay - more color / fx - slightly delayed trigger if possible
This gives: - warehouse kick stacks - distorted low tom barrages - rolling industrial grooves - pseudo-reverb rumbles without external effects
This is where Bohm gets really interesting. Since the manual says PITCH ranges roughly from C1 to C2, that’s right in useful bass territory. It won’t be a full-range melodic oscillator in the conventional sense, but for heavy bassline work that limited range can be perfect.
Use Bohm as a monophonic bass percussion voice rather than a sustained oscillator.
This should create: - gnarly bass stabs - wobbling low-end phrases - distorted “donk” basses - neuro-ish bass punches
Because Bohm starts from a kick architecture, even pitched notes will retain a percussive front edge, which is excellent for DnB.
Instead of only wobbling filter cutoff like on a subtractive synth, wobble the body mechanics of the kick model.
As COLOR rises while TONE falls, or vice versa, the bass can morph from: - hollow - nasal - snarling - sub-heavy - torn-speaker distorted
This gets you much more unusual movement than a normal filter wobble.
Use very short note retriggers with varying pitch envelope depths.
The trick is to make every rapid hit slightly different. Small CV movement on CURVE and COLOR matters a lot.
Bohm should be able to produce devastating drops if you extend the decay and pitch motion.
The manual says Performer adds DJ-style effects, ducking, and stereo processing. That is extremely useful for bass design.
Patch Bohm as both: - your kick/percussive source - and a sustained bass element
Then use Performer’s ducking to carve motion around the attacks.
You can get: - self-pumping basslines - club-style movement - huge stereo body with centered attack - more mix-ready distorted low-end
This is especially effective for dubstep intros and halftime grooves.
This is the least obvious use, but definitely possible if you stop thinking of Bohm as only a drum.
The manual mentions: - stereo processing - multiple models - FX and tone controls - longer sustain/length options - expanders for wider processing
That suggests Bohm can be pushed into drone and pad-adjacent territory, especially with re-triggering, long decays, and slow modulation.
Instead of a punchy kick, you get: - foggy resonant blooms - distant machine drones - haunted engine-room ambience - dark underscoring textures
Add external reverb after Bohm and it becomes much more pad-like.
Use frequent but low-intensity hits to create a cloud.
Each hit becomes a small fragment in a larger texture. In stereo this can feel like: - swarming air - distant choirs of machinery - unstable ambient beds - eerie pulsing fog
This works especially well if the model has a resonant or tonal tail.
Because Bohm only spans roughly C1 to C2, the pitch range is constrained, which is actually helpful for dark drone work.
You’ll get subtle beating and tonal ambiguity: - ominous low strings vibe - degraded tape-organ feeling - dark ambient resonance - horror soundtrack undertones
Performer’s stereo processing is the key here.
Even if the source is still obviously “kick-derived,” once spread and effected it can become very atmospheric.
Prioritize: - VELOCITY - ATTACK - CURVE - COLOR - TRS TONE
These shape the impact and harmonic aggression.
Prioritize: - PITCH - CURVE - SUSTAIN - LENGTH - COLOR - FX
These shape note identity, weight, and movement.
Prioritize: - LENGTH - SUSTAIN - COLOR - FX - TRS TONE - subtle PITCH
These shape resonance, tail, width, and slow transformation.
Use one CV source multed to several destinations with different attenuations: - positive to COLOR - inverted to TRS TONE - slight amount to CURVE
One knob or one LFO can then create major morphs.
Instead of only accenting loudness, use accent gates/CV to also open: - ATTACK - COLOR - FX
That makes accented steps brighter, harsher, and more explosive.
Use a probabilistic trigger or random stepped CV to occasionally alter: - PITCH - LENGTH - TRS DECAY
This makes loops feel less repetitive and more performative.
If Bohm accepts sufficiently fast CV on certain inputs, try audio-rate modulation of: - PITCH - COLOR - TRS TONE
Even if it doesn’t behave like clean FM, aliasing and instability can create brutal digital textures.
Since the module uses microSD / SDHC and stores models/samples/settings, a practical approach is: - patch extreme sounds - record long improvisations - resample the best moments - use those snippets in a sampler for further composition
That’s often the fastest path to truly unique bass and atmospheric material.
The manual mentions: - Studio Mode - Live Song Mode - Jam Mode
Use this for: - dialing exact sweet spots - calibrating modulation depth - building resampling material
Use this for: - sequenced parameter changes - switching kick/bass character per section - structured bassline or drum evolution
Use this for: - improvised macro modulation - live tweaking of color/fx/tone - chaotic transitions and fills
For your goals, Jam Mode sounds especially promising for discovering weird bass and haunted textures.
The big takeaway from the manual is that Bohm is model-based, and controls react differently per model, so the deepest sound design move is not just modulating more CV, but finding which model turns a given parameter into something extreme.
If I were designing the kinds of sounds you want, I’d explore in this order:
That combination should get you well beyond “kick drum” territory and into: - mangled industrial percussion - dubstep and DnB bass assaults - eerie cinematic atmospheres