I've got Sparks in a largish room also, but added an ACI Force sub, and the bass is killer now, plenty of gusto to pressurize a bigger room like yours. This particular sub mates beautifully with these quick little speakers. The soundstaging may always suffer that close to room boundaries, luckily my wife dosen't mind that my mains are in the middle of the basement. You gotta get them out into the room a little more if at all possible.
hope this helps. -Fish
hope this helps. -Fish