Paradigm uses isolation mounts on their drivers at least in the signature series.I found that my subs sound much tighter when they were laged to the floor.They have two Ascendant audio avalanche 15's with 1.2kw per channel.Each box is about 150 pounds and 5 cubic feet.Without laging the enclousures would move over a quarter of an inch back and forth.What do you want,to move the box or move air?