You have my sympathy Ndmaitre. It is indeed a shame that no conventional wisdom has emerged in this area - and the territory is littered with devices that merely change the sound, with claims of magical improvement. Looks like you will need to do your own experiments to prove which opinions are the more accurate.
I do not agree with either of the previous posts. The influences of vibration are some of the most profound as they create resonant peaks, or smear, and induce a persistent coloration that drives you crazy. This is one of the reasons many play endlessly with cones, footers etc because any change to the coloration is a blessed relief.
With fairly resonant shelves (eg. glass, acrylic, some timbers), Sean's observation is sound. For example, the metal rack should be sand-filled on a concrete floor, but not filled at all on a suspended floor.
But my preferred shelf, which is light, rigid and damped works best on an unfilled shelf, whether the floor is suspended or solid.
I do not agree with either of the previous posts. The influences of vibration are some of the most profound as they create resonant peaks, or smear, and induce a persistent coloration that drives you crazy. This is one of the reasons many play endlessly with cones, footers etc because any change to the coloration is a blessed relief.
With fairly resonant shelves (eg. glass, acrylic, some timbers), Sean's observation is sound. For example, the metal rack should be sand-filled on a concrete floor, but not filled at all on a suspended floor.
But my preferred shelf, which is light, rigid and damped works best on an unfilled shelf, whether the floor is suspended or solid.