Hi "CT", You have a nice large room; I'm a bit jealous. (grin) You are correct that K-horns won't work well in a room that large. Cornerhorns load small to mid sized rooms best. But you do have room for 10 Pi folded horns which will sound great just about anywhere you can place them. Wayne offers kits if you are woodworker inclined. If not, buy the kit and have a local wood shop build the boxes for you. The best craftsman in town will be cheaper than shipping finished speakers. BTW the Theater or Pro 4 Pi bass reflex will also work well, but if I had that kind of space, I would choose 10 Pi horns in a heartbeat. Take care, Steve