8000's did NOT work in my room: too much, uncontrollable bass.
I just crossed the 5200's over at 50hz and still have tremendous impact and bass (without subwoofer). Are we sure that the speakers are completely protected? Do I need to go higher to ensure damage doesn't occur?

Silence is overrated!
861v4.8, HD621, DSP8000's, DSP5000HC, 4x DSP5000 mkIII, D2500.