Yes there are plenty of things that isolate speakers and slow vibration transmission.svs has some reasonable feet put 8 on the bottom of each klipsch and see what happens.this experiment would cost you a few hundred dollars.you could always use these somewhere.enjoy the science.
Stacking
Greeting, I have a set of LaScala ll looking into horn loaded subs as in the Tuba 24. I'm limited for space, so will it have a negative effect if I stack the LaScalas on top of the sub?