I am scratching my head on the proper placement of a rear set of speakers in this soon to be media room. The width of the room is 13'. There will be seating against that back window, and yes black out curtains will be installed. As you can see in the picture the builder really gave me some odd ceiling angles to work with. I initially wanted in ceiling speakers to eliminate hiding speakers wires by running them through the attic. Corner mount speakers are also a challenge with the small build out they did in the right corner. This is my first media room so any suggestions would certainly be helpful.