Smaks - welcome back & thanks for checking in!
OK gang, as for the discussion above; The following from Ethan Winner is an excellent discussion on what I'm experimenting with.http://www.ethanwiner.com/acoustics.html#bass%20traps
The following is a very brief excerpt taken directly form his write up:
"a typical wood panel membrane trap. When a wave within the effective range of frequencies reaches the front panel, the panel vibrates in sympathy. Since it takes energy to physically move the panel, that energy is absorbed rather than returned into the room. The fiberglass then damps the plywood panel so it doesn't continue to vibrate. Were the panel allowed to vibrate freely on its own, less energy would be needed to keep it moving, so it would absorb less
First; the plywood face will face into the room.
I would love to be able to redo the back half of my room to allow super-chunk corner bass traps in 3 back corners (L-R-and along the ceiling intersection with the wall). However due to hasty planning, and my desire not too tear up my space, I cannot use the highly effective superchunks back there. So I am experimenting with this secondary solution. I will deem it successful if it helps out with ""medium-LF" in the range between 50 and 150Hz?
I hope to post more photos and graphs with in the week