I don't have an EP600, but I do have 2 EP500s. My room is about 14 x 35. 7'8" ceilings. It's enough bass for me. They shake the room real nice. I would probably have been fine with 1 EP500. I don't have them turned up much at all. I'm sure one EP600 would work fine for you. Ever think of the EP800? Not sure of the price difference. Someone on these boards has both an EP600 and EP800. That would be overkill for my setup. But that really must shake things up!