I would try the M60s at 40hz and 60hz and set them to which ever setting you prefer after some listening at each crossover point.

Wow, a VP150 set to full range, must have quite a bit of room gain going on there. I would bump that VP150 up to 80hz and set them all(M60s too) to small to keep all but the lowest frequencies from going through them, this lets the sub handle everything below those crossover points.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70