The reason they are asking you to test each speaker individually is to rule out anything that may be wrong with one of the speaker’s drivers or electronics components that is not detectable by the meter. If one speaker shuts the amp down and the other doesn’t then you’ve narrowed the problem down to the one speaker. If both speakers shut the amp down individually then IMO the amp and M80s just don’t play nice together, though there is a slight chance both the M80s could be bad, but not likely.

Certainly you can buy another amp that you know can handle the M80s and if it also shuts down then you know that one or both (not likely) of the M80s are bad. Testing the speakers individually with your existing amp or borrowing a receiver from someone to do it will just let you know sooner.

My suggestion is that you return the M80s and just buy something else since your initial hesitation and this experience have likely tainted your opinion of them to the point that if you do get them working properly cognitive dissonance will stop you from wanting to keep them.

3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1