In reply to:
However, I am not a fan of the way it sounds on small because my receiver cuts off at 80, whereas the M22's can play perfectly down to 50, and somewhat down to 40.
Hmm, Axiom's specs say that the -3db point for the M22 is 60Hz, and that it's down 9db at 50Hz. I would think an 80Hz crossover would be just right. Keep in mind the crossover point is not a "brick-wall"; your M22 would still be getting some bass below 80hz, it will just be rolled off as you get lower. A common guideline is that a speaker should be capable of producing at least some bass a full octave below the crossover point (ie 40Hz). If you don't like the sound when using the crossover, it may mean that you need to better integrate/calibrate the sub for your system, or it could be that your sub produces too much distortion.
