Experience leads me to second Sean's note about power hungry lower frequencies. In my much lesser system than Sean's, the ~85-22Hz area (8"x8 woofers) are powered by ~500-600W at the nominal impedance rating -- and not quite adequately so, IMO.
I'm bi-amping, BTW, and thoroughly recommend multiamp configs...
I'm bi-amping, BTW, and thoroughly recommend multiamp configs...