Ozfly,
The floor was probably not contributing as much as you'd think. When I had the addition with the music room put onto our house, I specified that they put the floor joists on 10" centers rather than 16" centers (and I think they sized the joists one size larger than code), with carpet and padding over the 2 layers of 1/2" plywood. I also have about 200 pounds total of weights in various places between the speakers (plus a 36" direct view TV). All that weight did improve the bass significantly; I discovered this when I chucked out a 40" projection TV that weighed 195 lbs. and noticed all the bass had disappeared. Borrowed some weights from my neighbor, and, voila! Bass again.
While I'm sure the floor must "sing" to some extent, it doesn't obscure detail. The baseboard did.
The floor was probably not contributing as much as you'd think. When I had the addition with the music room put onto our house, I specified that they put the floor joists on 10" centers rather than 16" centers (and I think they sized the joists one size larger than code), with carpet and padding over the 2 layers of 1/2" plywood. I also have about 200 pounds total of weights in various places between the speakers (plus a 36" direct view TV). All that weight did improve the bass significantly; I discovered this when I chucked out a 40" projection TV that weighed 195 lbs. and noticed all the bass had disappeared. Borrowed some weights from my neighbor, and, voila! Bass again.
While I'm sure the floor must "sing" to some extent, it doesn't obscure detail. The baseboard did.