I agree and said as much earlier: the wavefronts cannot be dampened in any appreciable way.
My Outlaws are in some pretty solid, well built cabinets. Since my floor is so springy, it acted as my “accelerometer,” so to speak. At low to mid volumes with little-to-no infrasonic content, I was able to eliminate the vibrations n the floor.
The concrete pad by itself, the sound path feet by themselves; neither solved that problem alone. Even the concrete pad directly on carpet with the sound path feet still allowed some manner of vibration through.
Once I had the pads coupled directly to the floor board most of that stopped.
Until you get to the soundwaves themselves. When the bass frequencies and SPL are just right, no amount of effort to “isolate” will matter.