The problem is that the space labeled "Unusable Space" is actually a high traffic hallway. Behind that begins the kitchen with no wall close enough to mount speakers. I could move the speakers all the way up so that they're against the wall, but at a 90 degree angle to listener's ears on the couch. What I'll do is cut enough wire to move them to that position then try different ones. Worst comes to worst, I jump down to a 5.1 setup I guess, but I want to try what I can before I relent.