Greetings everyone. This is my first post. I am building a HT room that is 13'w X 21'L. The rear wall is going to be the enterance door, equipment racks, and shelves. What ceiling height should I use? Should I go with a 5.1 setup with bi-poles on either side of the seating area? Or is a 7.1 setup superior to 5.1 and then were would I place the rear surrounds? I am planning two rows of seating with a 7" riser for the second row. Also concerning subs - should I go with two subs located on either side of the screen? Thanks for any insight as I continue my reading of the tons of info on this site (amazing) Is there also a way of attaching pics on these posts? I have a floorplan jpg of the HT room.