JohnK:

For movies I do set the crossover at 80Hz. For music, I have been trying out 40, 60 and 80Hz settings to hear the minor differences in the audio experience. I know that I would be happy to leave the crossover at 80Hz! But I like to experiment (and tinker!). I guess I have too much time on my hands! :-)

Since I have the EP600, would you recommend the 80Hz setting as optimal?

4 M80s/VP150/EP600/Denon AVR-5308 & DVD-2910/
2 QSC SRA3622(1100wattsX2)/Carvin 1800HD(600wattsX2)