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Seismic bars

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Welcome to Seismic Bars by Townshend Audio

Elevate your audio experience with Townshend Audio’s Seismic Isolation Bars, expertly designed to decouple your speakers or subwoofers from disruptive floor vibrations. Crafted with precision, each bar features a robust steel cross-piece and advanced Seismic Load Cells™, allowing your speakers to “float” at frequencies above 3Hz for unparalleled sound clarity. Experience wider soundstages, deeper bass, and reduced distortion, all while minimizing noise transmission to keep your neighbors happy. Easy to install and available in multiple weight capacities, Seismic Bars transform your listening environment, delivering music as it was meant to be heard. Discover the Seismic Effect today
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Key Benefits You’ll Love

Superior Vibration Isolation

Seismic Load Cells™ isolate speakers above 3Hz, eliminating floor vibrations for clearer sound. Enhances transparency and soundstage depth.

Enhanced Bass and Dynamics

Tightens bass and improves dynamic range, delivering powerful, natural audio. Users report “strong, powerful bass

Versatile Compatibility

The copper conductors undergo Enhanced Isolda Deep Cryogenic Treatment, which enhances transparency and neutrality, outperforming other materials in clarity and detail. Improved Soundstage and Detail: Users report a larger soundstage, precise instrument placement, and enhanced detail, with the ability to discern subtle differences in recordings, such as identifying distinct recording studios. The cable excels in bass extension and dynamic range.

Holographic Soundstage

Creates a stable, immersive soundstage with precise imaging. “Voices and instruments locked in a holographic soundstage

Sizing up

The weight of your speakers is crucial in determining the right load cells for perfect isolation within the audio waveband. Our carefully calibrated Loadcells ensure the ideal spring-mass load, allowing your speakers to “float” and achieve comprehensive isolation from external vibrations. Once this balance is achieved, you’ll select a platform that fits your speakers as shown in the diagram. If there is a slight overhang at the front or back, this may be acceptable. For speakers that don’t fit any standard platforms, we offer a bespoke service to create a custom stand that perfectly suits your setup.

Choose your Loadcell strength from the cart below

What our customers says about us?

4.9

99%

Recommended

Write a review
Townshend Seismic Speaker Bars produce a result that goes way beyond what you might expect from ‘speakers on springs’. To get an improvement in absolute resolution, precision of timing and solidity of stereo image from something so apparently simple is extraordinary. These things really do change the game, move the goalposts, and revolutionise the way we should think about speaker support. This is not an accessory… it’s an essential.

Jason Kennedy- HiFi+

I just installed the bars [under the Amphion Two 18’s]. They sound amazing. The effect on the clarity across the range, soundstage, and bass cleanup has to be heard to be believed.

Michel Andre Jouveaux - TRANK

From the moment I put the seismic bars in place the whole sound has been transformed. Not just the bass, which is strong and powerful, but a distinct improvement right the way through the frequency range. Voices and instruments now have a clearer and more natural presentation, all locked in place in a very stable, almost holographic, sound stage. The change in the mid and high frequencies was far greater than expected.

Jason Kennedy- HiFi+

What I was hearing was a more natural rendition of the body of his guitar… a continuous lack of bloat, a cleaner and more defined upper bass with far greater weighted extension was apparent.

Dan Worth, Hifi Pig

The system revealed more nuance, subtlety, and realism across a whole range of music with the speakers isolated on the Seismic Speaker Bars. I really like the way you can hear further into each element of each piece of music.

HiFi +

In my setup, yes all positive, no vibration through the floor. 

What Hi-Fi? Forum

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The Ear
The EarJason Kennedy
Townshend Seismic Speaker Bars produce a result that goes way beyond what you might expect from ‘speakers on springs’. To get an improvement in absolute resolution, precision of timing and solidity of stereo image from something so apparently simple is extraordinary. These things really do change the game, move the goalposts, and revolutionise the way we should think about speaker support. This is not an accessory… it’s an essential
Hi-Fi+
Hi-Fi+Jason Kennedy
I have recently been trying Seismic Speaker Bars under PMC fact.8 speakers and have been shocked at the benefits that they accrue. The noise floor drops dramatically and the speakers ‘disappear’ from the soundstage. Close your eyes and it’s hard to point at them because the image is so strong, it’s so three dimensional and convincing that it seems unrelated to the position of the speakers. Equally impressive is the way that overhang is reduced and timing precision increased.”
HiFi Pig
HiFi PigDaniel Worth
The Seismic Speaker Bars gave a relaxed and controlled top end that flows with more ease and more confidence, whilst retaining the air and transparency I’ve worked so hard to achieve… The lack of injection into the structure of the room and the surrounding building was most noticeable here and less interaction with the framework of the structure equals less interaction back into the speakers.

frequently asked questions

The Seismic Adjustable Bars are designed to isolate speakers (standmount, floorstanders, or subwoofers) from floor vibrations, preventing unwanted resonance from affecting sound quality. Each bar features two Seismic Load Cells™, which use a spring-mass system with air-resistant damping to “float” speakers above 3Hz, blocking vibrations in all directions (up/down, left/right, back/forth). This results in clearer sound, tighter bass, and a wider soundstage while reducing neighbor disturbances. “The sound improves dramatically, with wider stage width and greater depth.
No, the Seismic Adjustable Bars are not sonically inferior to the Podium; both deliver near-identical sonic benefits because they use the same Seismic Load Cell™ technology, the critical component for isolating vibrations above 3Hz. The Podium’s extra mass and constrained-layer damping provide added stability for heavier speakers (>75kg) or complex setups, but the bars achieve comparable clarity, bass definition, and soundstage expansion for smaller to medium speakers. User reviews confirm the bars’ performance rivals the Podium’s, with one noting, “General improvement in clarity” under Martin Logan speakers.
The bars are versatile, supporting speakers from 0.5kg to 75kg, including standmounts, floorstanders, and subwoofers. They are adjustable for speaker widths (264mm–724mm) and available in five weight capacities (A to E). For loads above 30kg or speakers taller than 1m, Townshend recommends Podiums for easier setup and stability, but the bars can handle up to 75kg with care.
Installation is simple: remove any spikes or cones from your speakers, slip one bar under the front, tilt the speaker forward, and slide the second bar under the rear. Fine-tune the vertical alignment with small adjustments to the Load Cells. Despite the “floating” effect, speakers remain stable and require significant force to topple. No tools are needed, and setup takes minutes.
Users report dramatic enhancements, including:
  • Transparency: Clearer vocals and instruments with a “holographic” soundstage. “Voices and instruments now have a clearer and natural presentation.”
  • Dynamics: Tighter, more defined bass without boom. “The bass is strong and powerful… a distinct improvement right through the frequency range.”
  • Bandwidth: Wider, deeper soundstage with precise imaging. “Separation of instruments much better, clarity, better detail.”
    The bars also reduce structure-borne feedback, allowing high-volume listening without disturbing neighbors.
Yes, the Seismic Adjustable Bars are suitable for wood, tile, or carpeted floors. Their adjustable Load Cells compensate for uneven surfaces, ensuring a stable, level setup. Users confirm effectiveness on various floors, including suspended wood and concrete with carpet.
Unlike spikes, which couple speakers to the floor and transmit vibrations, the Seismic Bars decouple speakers using a low-pass mechanical filter, isolating vibrations above 3Hz. This outperforms partial isolation solutions like Sorbothane or elastomeric pads, which only attenuate above 10–15Hz. “Spikes… rely on the naive notion that rigid coupling and one-way energy transfer are achievable. They are not.” Users report the bars surpass alternatives like Stillpoints or IsoAcoustics Gaia, with one stating, “A worth while improvement over… Stillpoints.
The bars are ideal for speakers up to 30kg for single-handed setup; for heavier speakers (up to 75kg) or those with high centers of gravity, Podiums are recommended for stability. Ensure the correct Load Cell capacity is selected using Townshend’s load cell selection chart to avoid overloading. For uneven weight distribution, stronger Load Cells may be needed.web:6 Some users note a learning curve in aligning speakers to avoid wobble, but this is minor with careful setup. Townshend will be ready to advise you on any unusual speakers and work with you to find the optimum solution.
Built with high-quality steel and Seismic Load Cells™, the bars are designed for durability and longevity, withstanding environmental conditions like temperature variations and areas with high pollution and ozone. They come with a 5-year warranty, reflecting our high confidence in their UK craftsmanship. “Mechanical filters are generally known for their durability and longevity unlike polymers that degrade rapidly over time.

Townshend Audio’s mechanical low pass filter exemplifies true decoupling, offering a level of vibration isolation that far surpasses conventional attenuation methods. By effectively isolating components from vibrations down to below 3 Hz, Townshend ensures that high-fidelity audio systems perform at their best, free from the distortions caused by external vibrations.

User Gallery

Get In Touch With Us

Unlock a world of pure, unadulterated happiness with our products—don’t lose touch with us now, and let us elevate your audio experience to blissful heights

Our Location

7 Bridge Road, East Molesey

Phone Number

0044 (0) 208 979 2155

Email Address

mail@townshendaudio.com

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Auto-Transformer Preamplifiers

Available in five weight capacities (from under 5kg to over 75kg), these steel-crafted bars adapt to any speaker size, ensuring precision sound quality for every audiophile. Easy to install—simply remove spikes and slide a pair under your speakers—the Seismic Isolation Bars transform your audio setup with dramatic improvements in resolution and musicality. Trusted by hi-fi enthusiasts worldwide, they’re a must-have for anyone serious about pristine sound.
Boost your hi-fi performance today with Townshend Audio’s Seismic Isolation Bars—shop now and hear the difference vibration-free listening makes!
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Audio Cables

Immerse yourself in sonic truth with Townshend Audio’s Fractal Speaker Cables and Interconnects, engineered for ultimate transparency.
Featuring proprietary Fractal™-treated copper, these cables banish distortion and unveil a captivating, lifelike soundstage that redefines audio fidelity.
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Seismic Podium

Elevate your audio with the Townshend Podium and Seismic Range, where cutting-edge isolation banishes vibrations down to 3Hz.
These engineering marvels deliver a pristine, immersive soundstage, freeing your music from the distortions of the floor beneath.
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Why Choose Isolda Speaker Cables?


Most speaker cables in the audio industry overlook the science of transmission line theory, resulting in micro-reflections that smear and veil the purity of sound. These reflections bounce between the source and speaker, muddying the music you love. The Isolda DCT Speaker Cable eliminates this issue through its unique geometry, closely matching the impedance of your amplifier and speakers. The result? A crystal-clear soundstage, lifelike 3d imaging, and seismic bass that transforms your listening experience.

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Engineered for Audiophile Perfection

Crafted by hand in small batches, Townshend Isolda cables feature closely spaced, insulated flat copper conductors encased in a polyester braid sheath. This design makes them virtually immune to Radio Frequency Interference (RFI), ensuring a silent background that lets every note shine. Whether you’re listening to intricate classical compositions or powerful rock anthems, the Isolda delivers sound so natural, it feels like the artist is in the room.

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Pure, Uncolored Sound

 

The Isolda DCT’s impedance-matched design (8 ohms) eliminates signal reflections, delivering music exactly as recorded. The Ear praises it as “one of the best speaker cables money can buy” for its neutral, fatigue-free sound.
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Seismic Bass Power

Closely spaced EDCT copper ribbons produce deep, articulate bass with unrivaled solidity. townshendcable.com highlights “bass with a power that is truly seismic,” making every low note punchy and precise.
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Stunning 3D Imaging

he cable’s low-inductance geometry creates a holographic soundstage, placing instruments with pinpoint accuracy. 6 Moons notes it “can convey a huge and realistic soundstage,” immersing you in the music.

 

 

 
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Silent Backgrounds

 

Virtually immune to RFI due to its flat, closely spaced conductors, the Isolda DCT ensures pitch-black backgrounds.
 
With genuinely silent backgrounds,” letting subtle details shine.“
 
 
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Perfect Impedance Matching

With an 8-ohm impedance matching typical speakers, the Isolda DCT prevents distortion from mismatched cables. townshendcable.com explains this preserves square waves, ensuring “no ringing or distortion.”
 
 
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Unequal Lengths, Same Sound

Unlike other cables, Isolda DCT Speaker Cables perform flawlessly even in unequal lengths. Thanks to their advanced impedance-matching technology, the sound from each speaker remains identical, regardless of cable length. This flexibility makes them ideal for any audio setup, from compact home systems to sprawling high-end rigs.

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Explosive, Precise Dynamics

 

EDCT-treated conductors deliver lightning-fast transients and vast dynamics for thrilling playback. Every note snaps with energy from whispers to orchestral peaks, as HiFi Pig praises its “bass clarity and space,” emphasising high-current handling, ideal for dynamic genres like rock or classical. The Isolda DCT brings music to life with unmatched precision and power.
 
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Natural, Fatigue-Free Sound

We’ve engineered the Isolda DCT for a relaxed, natural sound, free from harshness or edge. Impedance matching and RFI immunity ensure effortless music flow, perfect for vocals or acoustics, and one astute audiophile’s tale of his relief from “Alice-in-Wonderland” cable woes. Enjoy hours of fatigue-free listening with emotional depth and clarity.
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Unleash Your Music’s True Potential

 The Townshend Isolda DCT Speaker Cable is your key to audiophile bliss.

 Transform your hi-fi into a sonic masterpiece. Don’t just listen—experience music with seismic power, stunning clarity, and soul-stirring emotion today.

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