I am going with a 7.1 setup for my very long and narrow room. It is 27 ft long but only 79 inches wide in one area of the room. I only have 61/2 ft ceilings. My 5.1 system is an M&K 150 THX system. I didn't know if I should go with a direct radiating speaker for the back surrounds or if I should go with a tripole/dipole etc. I asked the guys ast M&K who I can't say enough about. They said that I absolutely shouldn't go with a direct radiating speaker. They reccomended getting the column surrounds or getting a tripole speaker and placing it on the floor. I have a loveseat at the back of my room for the seating area. I was going to put the speakers right behind the rear row and have the speakers slightly above the ear level of the back row. Does anyone have any experience or advise on this situation? I really would appreciate some help. I am finally making good progress.