I'm creating a 7.1 system in a basement room that is about 28' by 15' and about 9' high. My question regards the back two speakers. I am placing my tv and front 3 speakers at one end of the room and have two choices regarding how to place the back speakers. I can either place the rear speakers in the ceiling a couple of feet behind the viewing area or I can place speakers on the wall (or on stands) at the back end of the room (about 12 to 14 feet behind the viewing area). I need to keep the area behind the viewing area open for the kids to play in. Any suggestions about which alignment would create the best sound field? The distance from the TV (a 50" DLP) to the viewing area is about 13-14'. Thanks so much for your help. I really appreciate it! Take care.