Thanks for taking the time to write up your experience. Correct me if I’m wrong but didn’t you already replace the amp in your first EP800. If so did you ever ask Axiom what if anything the found wrong with it?

You’ve also been very patient through this. Any chance your going to try another amp? Ever thought of getting a smaller subwoofer like the EP500 and adding some Buttkickers to carry the very low end. Good luck finding a sub that goes as low with as much authority as a Buttkicker, not that there‘s much 5Hz material out there.
3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1