I use M22's as my mains with the C/O set at 80Hz. The Double Deuces sound great at that setpoint. I have them blended with the sub pretty well and you can't hear them tail off before the sub takes over, just a nice smooth transition that you don't notice unless you know what you are listening for. Their freq. response is just about to start dropping at 80 so you wouldn't want to cross over any lower than that.

"That's some catch, that Catch-22." "It's the best there is." M22ti VP150 EP350 QS8 M3Ti