# Ohmforce — Bohm Multimodal Kick Drum Voice - [Manual PDF](../../manuals/Bohm_Eurorack_Manual_Compiled.pdf) --- [Manual PDF / Source](https://bohm-eurorack-manual.readthedocs.io/en/latest/index.html) # Creative patch ideas for the Bohm Eurorack system Bohm looks like much more than a simple kick module: it’s a **stereo dual-voice kick platform** with model-based synthesis, performance modes, optional **Groove** layering, and **Performer** stereo/DJ-style processing. That means you can treat it as: - a kick drum voice - a bass percussion synth - a layered low-end system - a stereo effects destination - a live techno performance centerpiece Because the manual suggests the controls behave differently per model, a lot of the fun will come from **modulating familiar parameters across different models** and using external modules to create structure, groove, and movement. --- ## What stands out from the manual A few things suggest the best creative uses: - **Multiple kick models** with different architectures This means model selection and parameter sweeps can give you multiple drum-machine personalities in one patch. - **Stereo dual-voice concept** Useful for layered kicks, call-and-response percussion, stereo movement, and low-end + texture splits. - **Groove expander** Especially suited for **rumbles, layered percussion, and secondary impacts**. - **Performer expander** Adds **ducking, DJ-style effects, and stereo processing**, which is huge for live transitions and making a kick patch feel like a finished record. - **Studio / Live Song / Jam modes** This strongly suggests pairing Bohm with **sequencers, CV memories, switches, and performance controllers**. - **Pitch curve behavior inspired by 808/909** This means Bohm likely responds very musically to **pitch CV, envelopes, accent, and transient shaping**. --- # Best module pairings ## 1. Trigger sequencers and drum sequencers Bohm will shine with a sequencer that can do more than simple quarter notes. ### Good pairings - **ALM Pamela’s Pro Workout** - **Xaoc Moskwa II** - **Intellijel Steppy** - **Winter Modular Eloquencer** - **Five12 Vector Sequencer** - **Noise Engineering Numeric Repetitor** - **Verbos Multi-Stage / Voltage Multistage** for more experimental sequencing ### Why Use them to create: - standard 4-on-the-floor - broken kicks - fills - probability-based ghost hits - pattern-specific accent variations - alternating main kick / Groove voice patterns ### Patch idea Send a main trigger pattern to Bohm and a sparser or shuffled pattern to Groove. Then use a sequencer lane or probability trigger to create occasional layered hits for transitions. --- ## 2. Accent and velocity modulation Since Bohm has **VELOCITY**, it’ll benefit enormously from dynamic triggering or CV modulation. ### Use with - CV sequencers - offset/attenuator modules - random stepped voltage generators - function generators - MIDI-to-CV interfaces with velocity output ### Specific recommendations - **Mutable Instruments Marbles** - **Bastl CV Trinity** - **Make Noise Maths** - **Frap Tools Falistri** - **After Later / Mutable Peaks-style modulation sources** - **Hermod+** if working with MIDI velocity ### Patch idea: “Humanized warehouse kick” - Trigger Bohm with a rigid 4/4 clock. - Modulate VELOCITY slightly with a stepped random source, attenuated carefully. - Send another very subtle modulation to ATTACK or COLOR. - Result: a kick that keeps the pulse steady but feels alive in a long techno set. --- ## 3. Envelope generators for macro kick sculpting Even if Bohm has internal shaping, external envelopes are perfect for animating model-dependent parameters. ### Great targets - PITCH - CURVE - LENGTH - COLOR - FX - TRS DECAY / TRS TONE ### Modules - **Make Noise Maths** - **Intellijel Quadrax** - **Xaoc Zadar** - **Cosmotronic Delta-V** - **ALM Pip Slope** - **Doepfer A-171-2** ### Patch idea: “Pseudo-sidechained pitch rip” Use a fast-decay envelope into PITCH or CURVE on selected hits only. This can exaggerate the classic downward pitch sweep and create huge modern hard-techno transient impacts. --- ## 4. VCAs and CV processors A lot of people underrate this with drum modules, but CV processing is where Bohm becomes a serious instrument. ### Useful module types - attenuverters - offsets - VCAs for CV - polarizers - sequential switches - logic modules ### Recommendations - **Happy Nerding 3xMIA** - **Frap Tools 321** - **Befaco A*B+C** - **Intellijel Triplatt** - **Mutable Blinds / clones** - **Doepfer A-172 / A-185 style utility support** ### Why Different models likely react very differently to the same CV range. Utilities let you: - narrow modulation sweet spots - invert envelopes - combine random + envelope motion - create different response depths for different songs ### Patch idea Mix a slow triangle LFO with a tiny random stepped source, then attenuate heavily into COLOR. You’ll get subtle model drift rather than obvious wobble. --- ## 5. Random and generative modulation Because Bohm has many timbral parameters, random voltage can transform it from “kick module” to “evolving percussion system.” ### Modules - **Mutable Marbles** - **Make Noise Wogglebug** - **SSF Ultra-Random Analog** - **XAOC Devices Batumi** in stepped mode through sample-and-hold - **Turing Machine + expanders** ### Patch idea: “Intelligent industrial kickline” - Main kick on every quarter note. - Random modulation to ATTACK and COLOR at low depth. - Probability-based extra trigger to Groove. - Send Groove through a long decay or external feedback path. - Result: a controlled but unstable industrial techno low-end bed. --- ## 6. Sequential switches and scene switching Since Bohm has multiple running modes and likely rewards parameter changes, external switching is a strong pairing. ### Modules - **Doepfer A-151 Sequential Switch** - **Tenderfoot quad switch types** - **Shakmat Bard Quartet** - **Vice Virga** - **Noise Engineering Vice Virga** - **WMD SSM / similar switch modules** ### Patch idea: “Four kick personalities” Prepare four CV sources or offsets for PITCH/COLOR/FX and switch between them every 8 or 16 bars. This lets Bohm move through: 1. dry club kick 2. distorted hard kick 3. boomy rumble layer 4. washed transition kick This is especially effective in **Live Song Mode**. --- ## 7. Distortion, saturation, and wavefolding Bohm likely already covers a lot of internal kick colors, but external saturation is still one of the best pairings. ### Great module choices - **Noise Engineering Ruina Versio** - **Noise Engineering Terci Ruina** - **Strymon Magneto input drive** - **Bastl Dark Matter** - **Instruō tanh[3]** - **SSF Triptych** - **100 Grit** - **Metasonix / tube modules** if you like dangerous low-end chaos ### Patch ideas #### A. Hard techno destroyer Run Bohm into a distortion with parallel dry blend. Keep the sub intact and smash only the mids/high transient. #### B. Folded click layer High-pass a copy of Bohm, then wavefold it. Mix that back with the dry signal for a custom top-click that tracks your kick pattern. #### C. Rumble exciter Send Groove into saturation before reverb/delay to make the rumble denser and more harmonic. --- ## 8. Filters and EQ modules A kick module through a filter sounds obvious, but there are some less obvious uses. ### Good module types - multimode filters - fixed filter banks - stereo filters - resonant low-pass gates - parametric EQ / sculpting modules ### Recommendations - **QPAS** - **Bastl Ikarie** - **Sara VCF** - **Worng Parallax** - **Doepfer Wasp / SEM filters** - **ADDAC fixed filter banks** - **Joranalogue Filter 8** ### Patch ideas #### A. Split-band processing Mult Bohm: - one copy stays clean for sub - one copy goes through a band-pass filter and distortion Mix to taste. This keeps low-end solid while adding a controllable attack band. #### B. Resonant kick bassline Patch PITCH CV melodically and run Bohm through a low-pass filter that opens only on selected hits. This can turn Bohm into a bass-percussion hybrid. #### C. Stereo Performer widening If using Performer, process its stereo output through a stereo filter with slow modulation for breakdowns and transitions. --- ## 9. Delays and reverbs for techno rumble The manual explicitly points toward **Groove** as a rumble/layering tool. External effects can push this much further. ### Best effect pairings - synced delay - reverb with filtering - feedback processors - stereo diffusion - clocked delay into saturation ### Specific modules - **Make Noise Mimeophon** - **Strymon Magneto** - **Happy Nerding FX Aid XL** - **Xaoc Timiszoara** - **Intellijel Sealegs** - **Erica Synths Black Hole DSP 2** - **Desmodus Versio** - **Nautilus** ### Patch ideas #### A. Classic rumble loop - Send Groove output to reverb. - High-pass the reverb return. - Compress or saturate it. - Duck it against the main kick using Performer or an external envelope/VCA setup. This gives you the classic rolling techno basement rumble. #### B. Pinged sub tail Use a very short delay with feedback and low-pass filtering on Groove only. This can create a tuned resonant tail behind the main kick. #### C. Stereo transition wash During fills or breakdowns, push Bohm or Groove into long stereo reverb, then snap back to dry for the drop. --- ## 10. Compressors, envelope followers, and sidechain tools Since Performer already includes ducking, external dynamics modules can still open up more advanced routing. ### Useful modules - **WMD MSCL** - **Cosmotronic Messor** - **Frap Tools CGM dynamics setups** - **Mutable Ears / envelope follower types** - **Detect-Rx** - **Endorphin.es Cockpit / Ghost** - **Shakmat Archer’s Rig / sidechain-capable mixers** ### Patch ideas #### A. Self-ducking rumble bus Use Bohm’s trigger or an envelope follower from Bohm audio to duck a reverb return or bass voice. #### B. Kick drives the whole patch Let Bohm control the sidechain on: - drones - pads - acid lines - sampled textures This makes the kick the central rhythmic authority in the patch. #### C. Dynamic transient emphasis Compress a distorted parallel version of Bohm while keeping the dry transient uncompressed. --- ## 11. Mixers and parallel processing Bohm is the kind of module that rewards **parallel chains**. ### Useful module types - submixers - stereo mixers - sends/returns - performance mixers - crossfaders ### Recommendations - **Happy Nerding PanMix** - **Befaco Hexmix** - **WMD Performance Mixer** - **Cosmotronic Cosmix** - **Toppobrillo Minimix** - **Joranalogue Mix 3** - **XOH / OUT-style stereo outputs** ### Patch structure Try 3 parallel lanes: 1. **dry Bohm** for punch 2. **distorted lane** for aggression 3. **reverb/delay lane** for space Blend live. This is especially powerful if Performer is present. --- ## 12. LFOs for long-form motion Slow modulation can make a repetitive kick evolve over 5–10 minutes. ### Great pairings - **Xaoc Batumi** - **DivKid øchd** - **Intellijel Quadrax cycling** - **Joranalogue Orbit 3** - **Pamela’s Pro Workout** ### Best parameter destinations - COLOR - FX - ATTACK - CURVE - stereo processing parameters via Performer ### Patch idea: “Set-and-forget evolution” Use very slow unsynced LFOs at tiny depth into 2–3 parameters. The kick subtly changes tone over the course of a track, keeping long loops interesting. --- ## 13. Quantizers and melodic pitch CV The manual says PITCH roughly covers **C1 to C2**, which opens up more than just drum tuning. ### Modules - **Intellijel Scales** - **Ornament & Crime** - **ADDAC quantizers** - **Bard Quartet** - **Mimetic Digitalis + quantizer** ### Patch idea: “Kick-bassline hybrid” Sequence Bohm’s PITCH melodically over a 1-octave range while keeping trigger density sparse. You can create: - tuned electro toms - bass kicks - industrial percussive basslines - 808-style melodic booms Pair with an acid line one octave up for huge groove lock. --- ## 14. Sample and hold / stepped modulation This is ideal if you want repeatable-but-changing kick settings every bar or phrase. ### Good tools - sample & hold - clock divider - stepped random - addressable CV source ### Patch idea Clock a sample-and-hold every 8 steps and route it to COLOR or FX. The kick timbre changes once per phrase, which feels musical rather than chaotic. --- ## 15. Logic and clock utilities Kick layers become much more interesting when trigger relationships are derived logically. ### Module suggestions - **Doepfer logic modules** - **Joranalogue Compare 2** - **ALM Pamela’s Pro Workout** - **Mutable Kinks / logic utilities** - **Klavis Logica XT** ### Patch ideas #### A. Accent from coincidence Generate a second trigger only when two rhythmic streams coincide, then use that to fire Groove or modulate VELOCITY. #### B. Fill generator Use a clock divider reset and logic combination to create end-of-bar fills that alter Bohm parameters for a single beat. #### C. Triggered FX burst Use logic-derived gates to open an external FX send only on special hits. --- # Performance-focused setups ## Setup 1: Minimal techno core **Modules** - Bohm - Pamela’s Pro Workout - 3xMIA - distortion - stereo reverb - mixer **Patch** - Pam triggers Bohm in 4/4 - Another Pam channel modulates VELOCITY subtly - Slow random via Pam into COLOR/FX - Distortion on a parallel send - Reverb on Groove or selected fills **Result** A compact but club-ready techno kick ecosystem. --- ## Setup 2: Live performance drum centerpiece **Modules** - Bohm + Groove + Performer - trigger sequencer - CV recorder or scene controller - stereo mixer - external delay/reverb **Patch** - Main pattern to Bohm - Syncopated layers to Groove - Performer handles ducking and stereo transitions - Use scene-based CV changes every 16 bars - Push FX and stereo width in breakdowns **Result** A highly performable low-end section that can carry an entire live set. --- ## Setup 3: Experimental industrial percussion lab **Modules** - Bohm - random source - sequential switch - wavefolder/distortion - band-pass filter - delay - envelope follower **Patch** - Irregular trigger patterns to Bohm - Random CV to ATTACK, CURVE, COLOR - Switch between different modulation depths - Distorted filtered parallel lane - Delay feedback only on selected hits **Result** Bohm becomes a brutal percussion synth rather than just a kick. --- # Less obvious uses ## Use Bohm as a bass voice Because of the pitch range and envelope-like character of kick synths, Bohm may work well as: - sub bass stabs - plucky mono bass - tuned low toms - 808-style booming notes Pair with: - quantizer - glide/portamento CV source - VCA for external amplitude articulation if needed - low-pass filter and saturation --- ## Use Groove as a dedicated send effect source Instead of thinking of Groove as “second kick,” treat it as: - the reverb-fed rumble voice - the distorted mid-bass layer - the ghost-hit percussion lane - the breakdown swell lane That frees the main Bohm voice to stay clean and mix-stable. --- ## Use Performer as a pseudo-master bus for your rhythm section If Performer has ducking and stereo effects, feed related percussion or bass into a shared bus around it if your system allows that kind of routing. This can make Bohm the anchor of a more cohesive live mix. --- # Practical modulation targets to try first If you’re just starting with Bohm, I’d prioritize these pairings: ### Most musically useful CV targets 1. **VELOCITY** — immediate groove improvement 2. **PITCH** — tuned kicks, fills, bass-kick hybrids 3. **COLOR** — tonal movement without losing timing 4. **ATTACK** — helps define placement in the mix 5. **CURVE** — major impact on classic drum-machine feel 6. **FX / TRS DECAY** — excellent for transitions and rumble work ### Best modulation sources 1. stepped random 2. short envelope 3. slow LFO 4. sequenced CV lane 5. logic-derived trigger converted to CV 6. manual performance controller --- # My top recommended companion modules If I were building around Bohm, I’d especially consider: ## Compact utility-oriented system - **Pamela’s Pro Workout** - **Happy Nerding 3xMIA** - **Make Noise Maths** - **FX Aid XL** - **Ruina Versio** - **small stereo mixer/output** ## Performance techno system - **Vector Sequencer** or **Eloquencer** - **Bohm + Groove + Performer** - **Messor** or **MSCL** - **Mimeophon** or **Sealegs** - **performance mixer** - **filter or saturator for parallel bus** ## Experimental sound design system - **Marbles** - **Falistri or Maths** - **Vice Virga** - **Filter 8** - **Triptych / Ruina** - **Desmodus Versio / Timiszoara** --- # Final creative advice The biggest creative opportunity with Bohm is to avoid treating it as “just the kick.” Instead, think of it as a **low-frequency performance voice system**. The winning strategies are: - keep one layer **clean and reliable** - make another layer **dirty, spatial, or unstable** - modulate **small amounts** for long-form movement - use **parallel processing** rather than destroying the main signal - exploit **sequenced CV and scene changes** to make one kick engine behave like an entire rhythm section If you want, I can also turn this into: 1. a **genre-specific patch guide** for techno / electro / industrial / ambient, or 2. a **shopping list of the best companion modules by budget**. [Generated With Eurorack Processor](https://github.com/nstarke/eurorack-processor)