So......what do you use under your speakers?

Geoffkait, Yes it was the Halcyonics which electronically cancelled the vibrations sensed but only up to about 300 Hz. The StillPoints standoffs also work quite well.

I can only imagine what music reproduction would be like were there no vibrations affecting the signal path, including those originating in it other than music sources.

Tbg, if we could electronically cancel vibrations we wouldn't have so much difficulty in observing gravity waves.

So......what do you use under your speakers?

Gold coins below speakers and heard the improvement immediately. I prefer
Krugerrands from South Africa ...superior Bass reproduction with a shiny top range. Their elastic damping factor is unique. High End done right.

Geoffkait, canceling is a loosely used word. Reducing them at certain frequencies is the reality. Isolation is essential for the "magic" sound stage that I am hearing, but I realize that it is only improved isolation.

I find that one has to experiment to determine what is best. Usually, with concrete floors, it is best to couple the speaker to the floor (sharp-pointed cones), but, isolation could, in some circumstances, be better sounding. If you don't like the cones you tried, then perhaps isolation, instead of coupling, should at least be tried.

I use isolation with my speakers and I do this with a Symposium Svelte shelf under my speaker. The shelf has a soft core between two aluminum sheets so that vibrational energy is dissipated as heat from the molecules in the soft core rubbing together. This results in a tighter sound, particularly in the bass. I also use shims under the Svelte Shelf to change the backwards tilt of the speaker.

If you don't like the height of the speaker, it is often possible to achieve some of what you want by changing the tilt of the speaker instead of raising it up. If you tilt the speaker back (top leaning away from you when you stand in front) that often acts in the same way as raising the speaker. This changes where the drivers are pointed and can change frequency balance, and for reasons I can't explain, such backward tilt tends to raise the height of the image.