I was afraid you were going to say that, I knew you had problems with the MPS-1, so much for the "new architecture" perhaps, maybe it's just the same limiter circuit.
What I keep wondering though is since I have changed so many variables at once it's become pretty hard for me to trouble shoot even conceptually what may be going wrong. It seems to me now since last post from observing/listening the rest of the movie that it may only be when the LFEs kick in that the amp shuts down, is it possible that when I am running a sub and have a crossover set to spare the M80s and/or with M80s are set to small that the problem will abate? I could test those variables now and of course I will but it makes me wonder. I still don't understand how the protection circuits work, are they sensitive to the situation in which the speaker is not able to handle the power X frequency equation, e.g., high power X LFE beyond speaker capacity blow out the woofer time?
