I am currently building a house with a 11.5' x 18' bonus room that I plan on converting into a home theater. On the one far wall is the stairs and opposite is a window, so my best options for the tv placement is along one of the 18' side walls. I don't want to dedicate this room to being a HT, I just want the availability to enjoying a movie when I want to. So blocking the window would really hinder the natural light when I am just lounging about in the room. The side walls slant in at about 4.5' up the wall and slants towards the ceiling. I want to install a 5.1 surround sound system and am looking at probably getting some monoprice in-wall/in-ceiling speakers. But I am having some trouble placing the pre-wire mounts. Should I place the speakers on the slanted wall or should I place them along the bottom vertical walls? The problem placing them below the slanted walls would be my center-front speaker would be covered by where I want to place the TV. If I install them on the slanted walls then I have to think about height placement and the angle they are going to be facing with respect to where I plan to be sitting. I am putting a couch along the 18' side wall with the slants opposite the TV. Any suggestions on what placement works best? Any help would be greatly appreciated! Thanks!