Originally Posted by Ladeback
I am not seeing how at 9' you at the middle of the room? You are 3' away. How many rows are you wanting and which one do want be the sweet spot. I am shooting for 3 rows and the middle to to be the best row and the middle of that row the sweet spot. It would help if you drew it out. I am looking looking to going with a room 16.6'x24' and the false wall back 3'-4'. Currently have a room 14x26 and 120" 16:9 screen and sit about 11'-12' back now which works for me. I am thinking of redoing it, but mine are basically just stuff walls so not as bad as having to tear dry wall down. Thanks for the calculator, that helps.
My room is 24 feet deep.
Front row "heads" are currently 16 feet from from the front wall (can't count the screen wall as it does nothing sonically). Moving forward 3 feet would put me at 13 feet, almost smack dab in the middle of a 24 foot deep room where 1st and 3rd order room modes are about as low as they can go into a null. As it is, I am almost at a 1st order null for width, but not quite. I wouldn't want to accent that with more positions approaching more nulls. I am just relying on room treatments and Anthem Room Correction to fix what it can, which is working out very nicely, but putting myself right into some nulls would make it more difficult. Below is a mode graph of my room. I marked with purple (fuchsia) where I sit in the room in the front row. I can't control the height (which actually isn't bad), and with two rows of 4 seats, I could sit in one of the extreme left or right seats, but then I am not visually close to the middle, so there are already compromises.
Then again, maybe I am calculating this all wrong and can't read the graphs below. (Seriously, I will admit that I could be wrong on this.)