How do/did you like the 502s? I have a similar situation in our basement. Not a closed off dedicated room, but currently running a 3.1 system with Klipsch RP-6000 at left & right, and the RP-250C at center. I'm looking to add the RP-402's on my rear wall, but they'll have to be offset from the seating positions, due to a doorway. The front row is about 10-15 feet away from the rear wall. I was able to run the cables across the ceiling to the rear wall, since that will be the simplest location to install without having to run exposed cables across the floor. I auditioned the 502's a few weeks back and like what I heard. But some audiophiles I know are trying to talk me out of bipole speakers for surround.