Gent's I have a family room that is 18 x 14 with an open path to the rear to the kitchen. My rear speakers are at the 18 foot mark on stands and I have vaulted ceilings as well. Can you please advise if two of Dayton Audio 15's would work in my layout as well? I was also contemplating purchasing Klipsch R-120SW Subwoofer, but after reading this thread I was wondering if the Dayton's are better.