I don't recall that, if you set your crossover to 80hz, the M60's and M80's will still play a lot of lowend bass, and as you gradually go below that crossover point the sub kicks in and rocks the house. Some like 60hz and some like 120hz settings, but I think the norm is around 80hz, there is a lot of bass down to those levels and the M60's and M80's are very very capable of those notes.

M60's
VP150
EP350
4 Qs8's


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85