Hi fbcoach,
Please turn off the Audyssey auto-EQ and setup. It is very error-prone and will often degrade the sound quality of otherwise excellent neutral speakers like Axioms.
If you are using a subwoofer, set the M60s, M150 and QS8s all to "Small" and use an 80-Hz crossover frequency (set it in your AV receiver). Turn the subwoofer crossover control to "Bypass" if it has such a setting, or if not, set the crossover control on the subwoofer itself to its maximum setting (150 Hz?) because you are using the crossover in the AV receiver and you do not want to cascade crossovers.
Play music with lots of bass, midrange and cymbals to check that each driver in each M60 is working; put your ear close at moderate volume and listen. If any of the drivers aren't working call the Axiom toll-free number and one of our Audio Experts will tell you how to fix the problem.
Regards,
