you will not notice any difference as that is not true biamping. Also, what version of the m80's do you have and what amp are you looking at from Emo, there have been past issues with Emo's shutting down driving the m80v2's, haven't heard about the v3's.
I talked to Lonnie at Emo and he said he discussed this with Axiom engineers about a year ago, and it has to do with the Axiom crossover not rolling off in some situations, which causes the Axioms to dip below 4ohms long enough in certain situations to put the amps in protect mode.
The v3's may be different, not sure.
