Proper Room Acoustics/Designs

Actually 1:1.6:2.33, but those can vary, depending on the size of your low frequency drivers. He advocates building a room inside a room, with all 6 parameters to be 12 inches deep (front, back, sides, floor and ceiling). He then builds Carbon filters/diffusers as well as absorption devices in the walls. It will be an ambitious project, but if I can get it right, it will be well worth the money. For the first time, I will be able to hear ALL of the notes attack, as well as decay. I have so much energy in my room right now, with 2 JL Fathom 13 subs turned on at low levels and low roll-off points it sounds muddy. All these years, I've been utilizing tube traps etc, to try to clean up my room to no avail. He has some interesting Youtube videos you may want to check out.

I will take a look at Earl Geddes book. The reason Dennis wants the 2 x 12's all over, is so no additional acoustic panels are needed. I guess I need to post a picture of my current room. It has around 20-25 sound absorption panels on walls and ceiling. The room has a kinda Cathedral ceiling, but there's about a 10' section of the ceiling at the top, that is parallel to the floor. I had a dropped ceiling installed, with about 6" of fiberglass on top of the tiles. It really helped a lot, but the room is still muddy in the lowest lows. I also have 4 ASC "like" bass absorbers placed strategically in the room. The highs and the mids are great, but still lacks in the lower bass frequencies.

I must have not done a very good job of describing the room. There won't be any drywall-at all. 2 x 12's on all 6 walls, floor, etc. Sound diffusers and bass traps will be incorporated in the walls where ever is needed. The bass traps are like Hemholtz devices, with the diffusers being vertical/horizontal slats. The outer walls will have material over them. Just look up Dennis Foley, to see his designs.