If you can run a direct radiating speaker for the rear channels I would suggest getting the M2 instead of the M22 unless the plan is to listen to a lot of music. There is very little difference from the M2 to the M22 except a little lower FR and power handling. The M2 is easier/lighter/smaller for wall mounting but if you still plan on the M22 Axiom's wall mount works very well with all their speakers.


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