Within the budget you mention, I think you should consider @geoffkait's suggestion. He does understand the mechanics of springs. I am personally familiar with the Townshend speaker podiums which perhaps are above your budget. The Townshends are superb at the kind of isolation Geoff is talking about. But I expect Geoff's solution will get you much of the way to the Townshends' level. Springs in my experience are better than other devices for isolation. I have a bunch of springs (Geoff's actually) under my other components though not my speakers.
Floor standing speaker isolation advice needed.
I have an older pair of KEF Reference Model Twos that currently sit on their brass(?) feet on the floor. The floor is tile but not solid cement underneath. I bought two .5" thick granite tiles for underneath the speakers and am wondering if I need to do anything else like put the spikes on the brass feet, add sorbothane under the granite tiles and/or under the brass feet or something else I should be considering? Things sound good on the top end but seem a bit subdued/muddy in the bass region. The KEFs are being driven by a Parasound Halo A23 and I’ve got a HSU VTF-3 MK 2 helping out the bass, mostly for movie duty.
Thanks for any advice.
Thanks for any advice.