A couple of other people (donaldkelley ?) also mentioned that they got much better sound using two m2s in parallel... might just have been higher output but I think I remember them talking about getting wider dispersion by angling the speakers apart a bit.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8