Bass traps keep standing waves from forming. What happens in a room with parallel walls is the pressure waves of different frequencies reflect off walls, especially corners. This causes some frequencies to build up, and others to be sucked out. Bass traps keep the energy from reflecting back into the room, allowing for much more even response throughout.

They're not going to keep things from rattling. Nor will they offer any sort of sound proofing. Although you may be able to play your sub at a lower level because you'll be able to hear those sucked out frequencies without having to crank it up.


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris