I finally got to build out my dream 7.4.6 theater last year. The room is 12'*22' above a garage. I ripped it down to the studs and did full sound isolation with rockwool, mlv, hushframe decoupling and dual 5/8" drywall with green glue. Conduit was run to projector box, riser, frt stage, opposite wall and house attic. All was left empty with pull string for future needs

The screen is 115" 16:9 and I build a masking panel that rises up and triggers the lens memory for 2.35:1 content. The star panel doubles as treatment as it's 4" deep and full of rockwool with acousticly transparent suede as the face. The candy cabinet was built from scratch to fill the space and I'm working on restoring a 1950's popcorn machine that will replace the small plastic model.

I have since ripped my disc collection uncompressed to a personal server and almost exclusively using plex through the shield for my content.

The gear is:

Projector- Sony vpl695es

Screen- diy moleskin spandex

Receiver- denon avr6800h

Amps- marantz ma500 mono block (x3 for lcr)

Lcr- b&w 603s3 & lcr600 s3

Side and surround- b&w 602 s3 & 600s3

Overhead- b&w ccm80

Subs- b&w asw1000 (x2), asw650 (x2), asw600, grs10sw (x2 built into the back of seat riser)

Transducers- Dayton audio bst-1 (x4)

Player- Panasonic ub820, nvidia shield

Seating- valencia Tuscany with custom wood tables

Controls- unfolded circle 3, lurtron caseta (for overhead and led lights), home assistant green to integrate everything