My reciever only allows one crossover setting (which I have set at 80 hz). However, I think the M22's can go down to 60hz. If I set the fronts (the M22's) to large and the sub to "plus", will the M22's suffer any from the low frequencies?

M80v3s, M5HP, QS4s, M22s, EP350v3, Denon X3700H