To be honest, I am highly skeptical of these "bass management" products. Treble absorbers/diffusers, I fully understand. But the room-mode problems in the mid-bass and bass frequencies are due to reflections off the entire surface of room boundaries. How the heck can these "absorbers," which will occupy a very small fraction of the reflecting wall area at best, possibly tame the bass frequency room modes in a meaningful way??? -- doesn't at all make a physical sense to me.