Shed Audio Research SA2-HFT150 High-Fidelity Tactile Transducer
Shed Audio Research SA2-HFT150 High-Fidelity Tactile Transducer
High Sensitivity. Unrivalled Dynamic Detail. Feel the full depth, detail, and power of every moment with uncompromised tactile realism.
The SA2-HFT150 from Shed Audio Research represents the cutting edge of tactile transducer technology, delivering enhanced low-frequency realism with greater control, speed, and authority than anything else in its class.
At its core is a robust motor system architecture built around high-grade neodymium magnets that generate concentrated magnetic flux at elevated Tesla levels within the voice coil gap. This configuration achieves a high force factor (BL product), enabling superior control of the motor mass and exceptional responsiveness to audio signals.
Complementing the motor is Shed Audio Research's advanced reactive suspension technology system, engineered for optimized compressibility, recovery, and mechanical damping. Its rapid restorative force ensures highly accurate linear motion, allowing the transducer to replicate the transient response of a low-frequency loudspeaker. The result is a tactile effect with woofer-like characteristics that elevate audio realism.
The result is tactile performance that feels less like a conventional shaker and more like a true low-frequency extension of your audio system: immersive, controlled, and deeply engaging.
Key Features
Powerful Motor
High-grade neodymium magnets deliver strong, precise output with excellent control and responsiveness.
Precision Suspension
Engineered for fast, accurate movement that tracks audio signals faithfully, like a high-quality speaker you feel instead of hear.
Slim Profile
At just 47mm (1.9") tall, it fits easily into platforms, furniture, and custom builds where space is tight.
Wide Frequency Range
Reproduces 10Hz to 1000Hz, from deep sub-bass to mid-frequency texture and detail.
Ideal Applications
Specifications
Owner's Manual
Download the official SA2-HFT150 owner's manual for installation guidance, wiring instructions, and recommended amplifier specifications.
Why We Use This Transducer
After extensive testing of tactile transducers from multiple manufacturers, the SA2-HFT150 is what we chose for the Zenthesia Sound Therapy Bed 2. The reason is simple: it delivers the cleanest, most articulate tactile sound we've experienced. Where other transducers muddy the signal or introduce resonance, the SA2-HFT150 tracks audio with precision.
For immersive audio, fidelity matters. When you're working with specific frequencies, complex music, or carefully crafted soundscapes, you need a transducer that reproduces exactly what's in the audio file. Conventional bass shakers are designed to make explosions feel bigger in home theater setups. They're optimized for impact, not accuracy. The SA2-HFT150 is optimized for fidelity: clean transients, accurate frequency reproduction, and the ability to resolve subtle details in complex audio material.
Now you can get the same transducers we trust in our flagship product for your own custom builds and installations.
Reactive Suspension Technology vs. Conventional Bass Shakers
Not all tactile transducers are created equal. Understanding the differences in design philosophy reveals why certain transducers excel at immersive audio while others fall short.
The Problem with Plastic or Metal Suspension Designs
Typical bass shakers rely on metal or plastic suspension systems to support the moving mass and manage excursion. These materials, while cost-effective, often lack the mechanical resilience and elasticity required for sustained high-performance operation. Under repeated heavy use or maximum excursion, the suspension can deform, lose tension, or even crack, leading to reduced output, loss of precision, and eventual mechanical failure. This degradation not only limits lifespan but also compromises the transducer's ability to maintain consistent linear motion, resulting in distortion and reduced tactile accuracy over time.
The Problem with Mass-Weighted (No Suspension) Designs
Another common type of bass shaker eliminates the suspension system entirely, depending instead on the weight of the internal mass to generate vibration. While this approach produces strong, rumbling motion, it lacks the controlled compliance needed for accurate transient response and signal tracking. The result is a "rattling" effect with delayed or smeared timing, where tactile energy lags behind the audio signal. This compromises realism and articulation, making these designs better suited for simple vibration effects rather than precise, audio-synchronized tactile reproduction.
The Shed Audio Research Advantage
By combining a high-force neodymium motor with a precision-engineered suspension system, Shed Audio tactile transducers deliver both strength and control: the hallmark of true audio immersion. Unlike conventional designs, this system maintains linear motion, timing accuracy, and consistency even under extreme performance conditions, ensuring a tactile experience that feels as authentic as it sounds.
Here's how the SA2-HFT150 compares to a typical consumer-grade bass shaker:
| Specification | SA2-HFT150 | Conventional Bass Shaker |
|---|---|---|
| Frequency Response | 10Hz to 1000Hz | 10Hz to 80Hz |
| Response Linearity | Even output across range | Resonant peaks at certain frequencies |
| Power Handling | 150W Continuous | 50W Continuous |
| Suspension Type | Precision-Engineered Reactive Suspension | Plastic/Metal Spider or None (Mass-Weighted) |
| Magnet | High-Grade Neodymium | Varies (often ferrite or lower grade neodymium) |
| Damping / Transient Response | Tight, controlled, fast settling | Looser, more resonant |
| Audio Fidelity | High-fidelity, detailed | Impact-focused, less detailed |
| Ideal Use Case | Immersive audio, music, sound beds | Home theater, gaming effects |
| Profile Height | 47mm (1.9 in) | 64mm (2.5 in) |
The most critical difference is linear response. Many bass shakers have a narrow frequency range with resonant peaks that color the sound and add artificial emphasis at certain frequencies. The SA2-HFT150 delivers controlled, even output across a broad spectrum (10Hz to 1000Hz) without the peaks and dips that compromise accuracy. This means you feel what's actually in your audio, not an exaggerated or distorted version of it.
Questions?
Whether you're planning a custom installation or want to know how this compares to other transducers, reach out anytime.
Frequently Asked Questions
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The SA2-HFT150 handles 150W continuous at 4Ω impedance. For a single transducer, we recommend an amplifier rated at 150W RMS per channel at 4Ω. For best results, use a quality amplifier with good signal-to-noise ratio and low distortion. Power requirements change for multi-transducer setups depending on how they're wired and the resulting impedance, so check your amplifier's output rating at the specific ohm load you're running.
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Yes. Two 4Ω transducers wired in series gives you 8Ω; two wired in parallel gives you 2Ω. Four transducers wired in series-parallel (two pairs in series, then paralleled together) brings you back to 4Ω. Make sure your amplifier can handle the resulting load, and check its power rating at that impedance since amplifier wattage changes with ohms. For complex multi-transducer setups, we recommend consulting with us or an audio professional.
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We recommend using a low-pass filter (crossover or DSP) with the SA2-HFT150. A low-pass filter improves the experience in two ways: it reduces audible sound leakage from the transducer (which increases with frequency), and it improves low-end performance by letting the amplifier focus its power on the frequencies that matter most. A cutoff around 200hz works well for most applications, delivering the bulk of the tactile experience while reducing ambient sound. If you're integrating with a speaker system, a crossover also helps blend the tactile and audible elements more seamlessly.
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Bolt the transducer securely to a rigid surface using all available mounting points. Loose mounting introduces noise and reduces performance. For beds and platforms, mount to structural crossmembers or a dedicated mounting board.
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Rigid, well-constructed surfaces transmit vibration most effectively. Solid wood frames, metal platforms, and quality furniture work well. Avoid flimsy or resonant materials that might rattle or absorb energy.
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Yes. Isolation pads or feet between your platform and the floor prevent vibration from dissipating into the floor structure. This keeps energy in the platform and reduces sound transmission to neighboring spaces.
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Yes. The SA2-HFT150 works in any orientation. Mount it in whatever position best suits your build.
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The SA2-HFT150 is built for professional, continuous use. The high-grade aluminum housing dissipates heat effectively, and the reactive suspension is designed to maintain performance over time without degradation. That said, don't overdrive it. Running any transducer beyond its rated power can cause damage.
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Slight heat build up during extended use is normal. If the housing gets hot to the touch, reduce the input level. Heat is often caused by distortion from an underpowered or clipping amplifier, which can damage the voice coil over time.
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Yes. Contact us directly if you're building a multi-transducer installation or ordering for commercial use.
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Absolutely. We're happy to answer questions about transducer placement, amplifier selection, and system design. For larger or more complex projects, we also offer paid consultation to help you spec the right setup from start to finish.