Rocks!!

Once again, you see the benefits of decoupling the sub from a wooden floor. The heavier and denser the slab, the less it will be prone to movement and vibration transmission. Add a second one and see if it works even better!

Originally posted by danger boy
not to hijack this thread. but i'm curious. i have carpet and pad over a solid concrete floor. will i get any improvement?

thanks, Al

Unlikely. Carpet and padding are a poor media for vibration transmission and the concrete floor won't move or create any of its own sound at all. You're good to go.

Doc

Originally posted by spasticpitbull
what about carpet and padding on a wooden floor that is raised from the ground?

Sid was just busting your balls.

The presence of carpeting and padding, in my experience, does next to nothing to prevent a powerful subwoofer from transmitting vibration, motion, and sound to a wooden floor over an open space.

Jump up and down on the floor. Can you feel it moving and can you hear it make a low frequency boom? If so, you need to isolate the sub from the floor. I've seen powerful subs (especially downward firing) turn wooden floors into virtual trampolines, and they start creating a sound of their own, adding boom to the bass.

While wooden floors over open spaces are IMO the bane of good bass, if you are stuck with one then by all means try to decouple the sub from the floor with something large, heavy, and dense. 2" slate or a concrete slab (like a paver or an A/C pad) usually helps greatly.

Doc