ricwilli
I havent heard the M50s, so I cant comment on them.
I have heard the M22s, and matched with a good sub I believe your going to be VERY HAPPY.
As for the wall mount brackets, I think you are going to be fine. Those brackets should give you just enough clearance btween the wall and the speaker.
Good Luck
Bray

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DON'T BE A DICK.