Stack Audio have released a range of loudspeaker isolators called AUVA, which stands for audio vibration absorber. The AUVAs are designed to do two things: “hold loudspeakers rigidly whilst simultaneously absorbing vibration. In doing so they combine the advantages of both spikes and compliant isolators, without the drawbacks of either, acting like a natural extension to your speakers”.
Stack claim that the AUVAs are different from compliant isolators; “instead of moving and compressing to absorb vibration, they use a pat. pending particle impact damping technology to dissipate vibration whilst holding the speaker rigidly. Enclosed within the AUVA’s precision machined aluminium cases are multiple finely tuned cells containing particles. Vibrations excite the particles, creating movement and collisions that dissipate the energy virtually instantaneously. Various materials including tungsten are used to ensure that the broadband absorption is as linear as possible. Maximising the contact between the AUVA cell walls and the particles ensures a high level of vibration can be dissipated, revealing more of the clarity in the musical recording. At the same time, the rigid shell holds the speaker perfectly securely for precise reproduction of musical and spatial details”.
The AUVAs are designed and made in the UK by Stack Audio. There are two versions to choose from – AUVA 70 (70mm diameter, £840 per set of eight) and AUVA 100 (100mm diameter, £1,240 per set of eight). They attach via supplied threaded bolts into the existing mounting holes on the underside of your loudspeakers. The AUVAs are supplied with both carpet spikes and protective felt pads for use on solid floors.
The AUVA 70 contains 3 internal cells for effective vibration absorption, whilst the AUVA 100 has twice the surface area and 5 cells. The AUVAs can be used with both stand mount and floor standing loudspeakers. The larger size and extra vibration absorbing capacity of the AUVA 100 is for those who seek the ultimate level of performance from their isolators. Both sizes are available now to order from the Stack Audio website with a 30-day trial period.