--Sorry, Gary. I disagree. Because of the open-cell structure of the material, Herbie's footers have no resonant frequency -- if there is, it would be a very, very low frequency. Herbie's footers do not "couple," rather they isolate by absorbing vibrations between and within two surfaces. As for the post your message replied to, Herbie's Tenderfoot isolation feet are ideal to isolate bookshelf speakers from a desk and are used by many customers for this purpose (usually speaker/shelf or speaker/table combination). The isolation material is a silicone-based formula that has some "squish" to it, yet is firm, sort of like a wax. It does not resonate at certain frequencies like vibrapods or rubber-like devices and therefore does not introduce anamolies such as bloopy bass or rolled off highs. It's extreme neutrality is due to the fact that it has no discernable resonant frequency of its own.
Thanks,
Steve Herbelin
Herbie's Audio Lab
Thanks,
Steve Herbelin
Herbie's Audio Lab