Complete newbie here. We are finishing our basement in a 2 year old house. Attached is the floor plan. The home theater is tucked in the back corner and adjacent to an unfinished utility room and an exercise room. It will have a tray ceiling with rope light and glass french door opening into the hallway. We have 8" solid concrete foundation walls and the builder put in R11 foil-faced insulation around. The utility room contains a very noisy AC/furnace so we'd also like to cut down that noise. We will have small bedroom in a bump-out area with only one interior wall. Since I may occasionally use the bedroom as my home recording studio (vocal only and I normally use a headset and no loud speakers). It's probably a good idea to also soundproof that.
I have read several Soundproofing 101 pieces and many posts on the AVS forum. I would like a lower cost and reasonable performance solution for soundproofing. Right now I'm thinking double layer 5/8 drywall with Green Glue on the inside of the home theater, single layer on the exercise room side, and R13 Insulation, since I may not have enough space for staggering framing or double layer drywall on both sides. For the ceiling I'll do double layer 5/8 with GG and R19 insulation. Channeling and clips sound quite complicated so I'm trying to stay away if I can. Double layer with Green Glue on the outside of the utility room only since the inside with be unfinished. Hopefully any noise coming from the home theater into the utility room can be contained somewhat by the double drywall outside the utility room. Bedroom can probably be treated similarly to the theater. I will get the Green Glue Sealant to seal any seams or outlets. Does the exterior wall side of the home theater need double drywall with green glue as well? What's the easiest to treat the french door opening?
We plan to build in a media rack in the bottom right corner of the home theater, so it'll be easier to access all the wiring in the utility room. We'll use the room also for karaoke so accessing the equipment from the back may have some advantage. I'm not sure if other people have done this. Are there things we should watch out for?
We'll skip buying a projector screen and paint our wall using 3 layers of Sherwin-Williams ProClassic Smooth Enamel Satin Extra White, # B20 W 51, as Projector Central has recommended. One thing I can't figure out is whether we should simply paint the entire wall, or only the size that'll be projected, maybe frame it and then paint the rest of that wall a dark color?
Many, many thanks!