Would buying a Expression 13a work for a 13WX14DX8 (measurements in feet) room or would benefit more because of the room size with the Impression 11A? I'm sure in either case setting up ARC correctly is paramount. One dealer told me with ARC you can control bass, and that the slightly larger 2" width of the 13A panels over the 11A, would provide an improved presence/sweet spot. Any opinions on this would be greatly appreciated.