I appreciate the help guys. I took some measurements last night. the room is 131" x 190". (10.9ft x 15.8ft) The screen will be on the 131" wall. The room is a basement conversion with a low drop ceiling measuring 78". (6.5ft) Do you think the ceiling height will be an issue? One last question... I was looking in the DYI screen forum, and came across the threads of people using silver/grey spandex. I am confident I could knock one of those out for cheaper with a better quality finished look. Do you think a 92" or 100" spandex type screen would work well in this application. The main thing is a want it acoustically transparent. I should also note that there are no windows in this area and it's completely blacked out.
just looked at that calculator coderguy, thank for that! it say's i can only get an 83" screen to work in the space? is that correct or is there away around that? would a different projector be a better fit? sorry for all the questions.