As I understand it, the seismic effects of the Townshend products are a byproduct but not really the thrust of the products. It is just a demonstrable, measurable performance of the degree of isolation. The lack of transmittance of vibrations - into as well as reflected from the floor - seems to be more the thrust of their approach. Townshend also addresses the "recoil" effect in his discussions. The Isoacoustics line of products addresses the same recoil issue, albeit with a different approach. May be of interest. Conventional thinking on this may be skewed.
My current setup is hardwood directly glued to urban suspended prestressed concrete slab with resilient footings (mostly to not mar the flooring). The lack of a soundboard beneath the speakers seems to have made a definite difference.
My current setup is hardwood directly glued to urban suspended prestressed concrete slab with resilient footings (mostly to not mar the flooring). The lack of a soundboard beneath the speakers seems to have made a definite difference.