>>and then return the M22s to the side and try the QS4s in back.

I'm guessing the M22s may already be at the back; at least I think that's the recommended placement for surrounds in a music system.

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