I had been conditioned to the idea of coupling speakers (and subwoofers) to the listening room floor via spikes and the like.
Along comes Elemental Designs - their Blog
discusses "...subwoofer isolation pads. The main purpose of the isolation pad is to decouple the sub from the floor to reduce loss energy spent traveling through the floor and to give the sub just a little more height..."
The height thing doesn't really concern me.
But that whole concept of directing all the energy into the room gave me pause. It made me consider the notion of suspending speakers/subs from cables rather than setting them on something. Not that I would DO this, it just seemed like the ultimate expression of isolating the speaker from the floor.
Do you think there could be a perceptible difference based on the degree of mechanical coupling between a speaker system and the listening room?