Quote:
Originally Posted by Dingaling2004 
I am doing a double skin floor with Green Glue layer and also carpet and rubber underlay. However, I am not sure if this will be sufficient to adequately reduce the amount of sound leaking through the subfloor and into the garage or throughout the rest of the home.
A local supplier here has just advised that I need to isolate the subs off the floor, but my feeling (and those of others here) is that 4 anti-vibration mounts screwed to the bottom of each Danley DTS-10 will do little to reduce the low frequencies in the room from these speakers and also the front sound stage.

I am doing a double skin floor with Green Glue layer and also carpet and rubber underlay. However, I am not sure if this will be sufficient to adequately reduce the amount of sound leaking through the subfloor and into the garage or throughout the rest of the home.
A local supplier here has just advised that I need to isolate the subs off the floor, but my feeling (and those of others here) is that 4 anti-vibration mounts screwed to the bottom of each Danley DTS-10 will do little to reduce the low frequencies in the room from these speakers and also the front sound stage.
I hold the contention that the great majority of the vibrational issues from well built subs isn't from cabinet contact. There (should be) much more energy coming out the front. Since the cabinet components are so small relative to the wavelength being produced, the panels aren't at resonance. So while lifting them off the floor might do something, it is not at all where your problem is. As you suspect, you need to beef up your floor as you plan for the walls and ceiling.
You can decouple the subfloor from the joists with rubber isolators.
Next best is to decouple the ceiling below with clips and channel.
Both will drop that low frequency resonance point of the floor for you, however the first option also minimizes vibration into the floor joists.
After decoupling, proceed as planned with massive panels and damp.















My eyes are always open though.










