The ceiling will be 10'. I'm basing the screen height on the rule of thumb that, ideally, the center of the screen should be at the MLP eye level. Using eye level as 42", the center would also be 42" above floor level. For my planned 100" wide 16:9 screen, the height is about 56", so the center is 28". For eye height of 42", the bottom of the screen would then be 14" above the floor. That's pretty low, so I went with eye level around 1/3 up from the screen bottom, so the bottom of the screen would be about 24" above the floor. For the back row, with a 10" riser, eye level would be right at screen center. What is the feedback here about optimum screen height vs eye level?
My stage will be 4-1/2' deep at the center. I plan to put the center speaker near the front wall, so the front of it would be around 2-1/2 feet from the front of the stage. The mains (M80s) will be on the stage, not sure about the sub(s).