Seismic Isolation Bars for Speakers and Sub-woofers Produce a wider and deeper sound stage. Enhance clarity throughout the whole frequency range. Improve bass definition. Eliminate structure-borne feedback between the speaker and vibration sensitive equipment. Allow for neighbour friendly high level listening. Eliminate irritating boom caused by coupling through the floor to adjacent rooms. Seismic Isolation Bars are designed to break the acoustic connection between the speakers and the floor, thus preventing the passage of unwanted vibration between the two. Used in pairs under any speaker, be it floor standing, stand-mounted or sub-woofers. Because of the very compliant nature of the Seismic Load Cells™, the speakers effectively float in the room at frequencies above 3 Hz. Each bar comprises a very strong steel cross-piece with raised ends under which are attached two Seismic Load Cells™. When installed you experience The Seismic Effect! The sound improves dramatically, with wider stage width and greater depth and the sound becomes independent of the speakers. Bass becomes tighter and more real, with thuddy boom greatly reduced. A major plus is that the sound of the speakers is no longer transmitted through the structure of the building with the same intensity so your neighbours will probably not hear your music! 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. Even though the speakers are floating, it takes a very big push to topple them. Technical Specifications:- The singular Seismic Load Cell is available with six different weight capacities, ranging progressively from 1kg up to 32kg. Virtually any weight of equipment can be isolated. The spring rates are as follows: Spring / Min weight / Max weight / Colour Code AA / 1kg (2lb) / 2kg (4lb) / Red A / 2kg (4lb) / 4kg (9lb) / Orange B / 4kg (9lb) / 8kg (17lB) / Yellow C / 8kg (17lb) / 16kg (35lb) / Green D / 16kg (35lb) / 32kg (70lb) / Blue E / 32kg (70lb) / 64kg (140lb) / Silver The maximum load when using four E springs is 256kg (560lb). For loads above this, eight or more load cells may be required
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