Wow Greg, Just caught up on the thread, theatre looks great hoping to get my build off the ground this year, have given me lots of inspiration my room dimensions look like they'll be quite similar, except I have a ceiling height around 2m on a concrete slab with no lining so I may be limited with double flooring and risers. How do you find the room length with two rows, do you find you are far enough off the rear wall in the back row? Also noticed you used a lot of lining around the room, any need to use defusers?
Did you do any panels on the ceiling?
Glad your enjoying the room