The shutdown issues with the M80's were previous versions of the M80's (V1 or perhaps early V2) that had a different crossover design than the V3. Emo's contention I believe is that Axiom designed the crossover where the midrange drivers were running full range without a HP filter. This would lower the impedance and in the lower frequencies creating high current demands where the midrange drivers are not producing any meaningful output. If this is true than perhaps is the reason for the earlier M80's shutting down their amps and why there is no problem now.
The EMO problems with the M80's do not seem problematic with the later V2 and V3 models.
