I am finally starting my new home theater build in my new home. I have done some research into sound deadening techniques and acoustic treatments over the past several weeks. I am looking for some advice in a few areas.
My dedicated room is 11.5' x 24' (Ceiling height is 12') with concrete foundation on 3 sides. I am planning on installing double 5/8" drywall with green glue on the ceiling and non-foundation wall. The foundation walls will have a frame installed with some regular insulation. My question relates to the false wall I am planning on building. I will be constructing a shelf behind my 120" screen opening in a false wall. We are planning on placing LCR floorstanding speakers along with 2 powered 12" subs on the shelf behind my acoustically transparent screen.
What is the correct way to ensure the best sound quality for the speakers on the shelf; specifically the subs. I am worried about rattles in the false wall. Should I double drywall and green glue the concrete surface behind the false wall? I was already planning on framing and drywalling with just some R-19 insulation but I can make any adjustments that are recommended.
FYI - This is the gear I have already purchased:
Elite EZFrame 120" Acoustic Pro
Polk Floor standing RTIA7B for LCR
2 pairs of Polk FXIA6B surrounds
2 DSWPRO 660Wi 12" subwoofers
Panamax Line conditioner