I own a pair of SC-V's Large speakers! 75 x 28 x 16. 385 lbs each. My room is 15 x 25 x 8 they seem to work well in it, although some care must be taken to treat the side walls for reflections. Im feeding them with Rowland model 9 monos w bps, consevativly rated at 350w into 8ohm...they bench tested at Rowland to more than 550w @8ohm. The dunlavys although 91.5db sensitive really love large amounts of power. Any questions that I can answer for you?