Sensory Fusion Alliance
Frequency transducer · details
BM1 Bench Module
Frequency transducer. The APOLLON frequencies, felt through the bench.
155 N peak force · 35 mm slim · IP66
- Peak force (78 N average)
- 155 N
- Overall height
- 35 mm
- Mechanical excursion, Xmax
- ±9 mm
- Resonant frequency, Fs
- 33.5 Hz
- Force sensitivity
- 4.5 N/W
- Weight
- 530 g
The idea
Frequencies you can feel.
The BM1 turns a bench into an instrument. Mounted beneath it, it sets the whole bench into resonance with the APOLLON frequencies and carries them straight into the body.
Inside a housing only 35 millimetres high sits a high-flux neodymium motor with its suspension integrated directly into the motor core. That architecture delivers up to 155 newtons of peak force and ±9 millimetres of controlled excursion without the height of a conventional transducer. It is far more than a bass shaker: across its range of 17 Hz to 1 kHz it transfers the APOLLON frequencies into the bench, and its flat force response keeps layered frequencies distinct instead of collapsing them into one generic shake. Double steel suspension, an aluminium housing that doubles as a heat sink and an IP66 rating make it built for continuous duty. In AudioCrypt Sensory Fusion it is the bench resonance, time aligned with the room resonance and the foundation.
01Highlights
Why it stands out
- 01
APOLLON frequency transfer
Not just bass. The BM1 brings the bench into resonance with the APOLLON frequencies and sends them through the bench directly into the body.
- 02
Precise bench resonance
A flat, controlled working range across 20 to 150 Hz keeps layered frequencies separate, using the full range of body perception.
- 03
155 N peak force
Up to 155 newtons of peak force from a compact unit. It does not simply vibrate, it delivers a precise physical impulse.
- 04
±9 mm excursion
Controlled long-throw movement gives depth and authority without bottoming out, even under high-impact signals.
- 05
Ultra-slim 35 mm
The suspension is integrated into the motor core, making it up to 45 percent shorter than conventional designs with no loss of excursion.
- 06
Efficient motor
An ultra-light, high-flux neodymium motor with oversized coils gives 4.5 N per watt, strong output from moderate amplification.
- 07
Zero plastic
Double steel suspension and a high-grade aluminium housing. Industrial-grade durability throughout.
- 08
IP66 rated
Sealed against dust and moisture, with an aluminium housing that doubles as a heat sink. Ready for spa, wellness and continuous duty.
- 09
Two mounting options
Screwed directly to the bench, or fixed with 3M Dual Lock professional mounting tape. Symmetric suspension works in any orientation without rattle.
- 10
Part of Sensory Fusion
The bench resonance of AudioCrypt Sensory Fusion, on its own Amp MK1 channel and time aligned with the room resonance.
02Technology
Integrated motor architecture
A tactile transducer moves a mass rather than air. As its motor drives the moving assembly, the reaction force passes through the housing into whatever it is fixed to, turning a bench into a radiating surface the body can feel. Most transducers stack the suspension on top of the motor, which adds height and limits travel. In the BM1 the suspension is integrated directly into the motor core, so it stays ultra-slim while keeping full excursion and force.
03Design and build
Steel, aluminium, nothing else
Materials
A high-grade aluminium housing with deep cooling fins, a double steel suspension and an aluminium basket. Pure metal construction with zero plastic.
Motor
An FEA-optimised, high-flux neodymium motor with a 72 mm four-layer voice coil. The suspension sits inside the motor core to save height.
Mounting
Either screwed directly to the bench with four 4.2 mm screws on the 96 mm circle, or fixed with 3M Dual Lock, a professional reclosable tape with interlocking mushroom-head stems.
04Specifications
Technical data
Technical data
- Product
- AudioCrypt BM1 Bench Module
- Type
- Tactile frequency transducer, direct drive
- Motor
- Neodymium, suspension integrated in motor core
- Power handling
- 50 W RMS · 250 W long-term max (IEC 60268-5)
- Impedance
- 4 ohms
- Frequency range
- 17 Hz to 1 kHz
- Resonant frequency (Fs)
- 33.5 Hz
- Peak force
- 155 N (78 N average)
- Force sensitivity
- 4.5 N/W
- Mechanical Xmax
- ±9 mm
- Housing / suspension
- Aluminium / double steel
- Ingress protection
- IP66
- Dimensions
- 104 mm diameter x 35 mm height
- Mounting option 1
- Direct screw mount to the bench, 4 x 4.2 mm on a 96 mm circle
- Mounting option 2
- 3M Dual Lock reclosable fastener, professional mounting tape
- Weight
- 530 g
- Recommended amplifier
- 50 to 250 W at 4 ohms
- Suggested low-pass
- 100 Hz impact focus, up to 150 Hz detail focus
- System role
- Bench resonance of AudioCrypt Sensory Fusion
Thiele / Small parameters
- Re · DC resistance
- 4.17 Ω
- Le · Voice coil inductance
- 0.22 mH
- Fs · Resonant frequency
- 33.5 Hz
- Qts · Total Q
- 2.60
- Qms · Mechanical Q
- 9.34
- Qes · Electrical Q
- 3.61
- Mms · Moving mass incl. airload
- 225 g
- Bl · Force factor
- 7.4 N/A
- Coil · Voice coil diameter, 4 layers
- 72 mm
In APOLLON SYSTEMS
- MK1 Complete · MK1 Bench Duo
- 2 × BM1 per bench
- MK1 Plus · MK1 Bench Solo
- 1 × BM1 per bench
- Driven by
- AudioCrypt Amp MK1 (bench channel) or a NetAmp (HUB One)
- Specifications compiled October 2026 from transducer platform data. Line drawings and diagrams are illustrative.
- Audio and vibration system. Not a medical device within the meaning of the EU Medical Device Regulation (MDR).