I am new to speaker placement for surround sound. I have a room that is approximately 13' x 11' with 9' ceiling. I would like to put in a 5.1 system, but my room technically only has 3 walls. I live in a condo so the right hand side of the room has no wall and is exposed to the kitchen. I have seen placement of the rear speakers on the back of the side wall facing towards the center of the room. This would not be possible for me since there is no wall to put the speaker on. Do I loose quality buy putting the speakers on the back wall facing the TV? I have also seen speakers on the ceiling facing down. What would be the most ideal setup for speaker placement? Does this depend on the type of speaker I buy?