Yeah, I generally leave my crossover at 60 hz, but sometimes turn it down to 40 hz during music for my m80 and ep500 combo. These settings are made in the receiver and the crossover on my ep500 knob is set to max (150/bypass)

I think in the end what it comes down to is personal preference and taste. I like having the crossover on my receiver and not the sub. This way I can make adjustments from my couch with out having to get up and twist a knob.

-David