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Townshend Audio Seismic Isolation Bars for Speakers and Subs


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Ex VAT: £808.33
Produce a wider and deeper sound stage, enhancing clarity throughout the whole frequency range using the Townshend Seismic Isolation Bars for Speakers and Subwoofers

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Warranty length 3 Years
Brand Townshend Audio

Product Description

Townshend Audio seismic isolation bars are designed for speakers and subwoofers, to improve bass definition and eliminating structure-borne feedback between cabinets and vibration sensitive equipment. The isolation bars allow for neighbour friendly high level listening and remove irritating boom caused by coupling through the floor to adjacent rooms.

Seismic Isolation Bars are designed to sever the acoustic connection between the speakers and the floor, preventing unwanted vibration passing between the two. They are used in pairs under any speaker whether it is floor standing, stand-mounted or a sub-woofer. Due to the exceptionally compliant nature of the Seismic Load Cells, the speakers effectively float in the room at frequencies above 3 Hz. Each bar comprises a strong steel cross-piece with raised ends under which two Seismic Load Cells are attached.

Once installed, you get the benefit of The Seismic Effect, drastically improved sound with a wider stage width and greater depth where sound becomes independent of the speakers. The bass becomes tighter representing reality more accurately and thuddy booms are significantly reduced.

Conventional so-called rigid supports (spikes or cones) aim to hold the speaker cabinet ‘still’ at audio frequencies. However there will be coupling between the speaker and the floor and myriad resonance set up by the mass of the cabinet reacting with the unavoidable springiness of the floor, which can cause vibration of the building structure in the audio band. Rigid coupling also transmits ground-borne vibration into the speaker cabinet and thence to the speaker driver baskets where it is superimposed onto your music. By using Seismic Isolation Bars you will be able to enjoy your music at its natural volume level, – as if you were listening to a live performance – without annoying the neighbours!

To install, first remove any spikes or cones from your speakers and slip one bar under the front of the speaker. Then tilt the speaker forward and slide the second bar under the rear. Very small adjustments allow for setting the speakers vertical.


Size 1 Dimensions - 43x30cm (17×12”)
Size 2 Dimensions - 48x35cm (19×14”)

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