Fat or muddy bass obscures detail in the midrange which then also negatively affects imaging. Very common with suspended plywood floors. Isolation helps clean that up. I use Auralex Subdude iso pads under my floorstanders and the difference is much as heardthat describes.
Unfortunately isolation does not increase speaker value. It just lets you hear more of the speakers and less of the floor.
Unfortunately isolation does not increase speaker value. It just lets you hear more of the speakers and less of the floor.