you would be better allowing the 600 to handle the full range set by bass management, which would give you a flatter frequency response within the room using multiple subs.

I guess you could call Axiom to get your answer, but I would want to use the full capability of the 600 WITH the MBM.

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