Nice setup tersaghi!. You mentioned you had a small "rattle" in your sub. I just bought two EP500s and one had a major "rattle" from the get go. The other lasted 2 days before it too started to "rattle". I pulled both woofers out and noticed that the voice coils had pulled (come unglued or whatever) apart from the woofer (cone?). It may be that somewhere in China a bad run of Woofers made it through. As I type, both of my new woofers are on the way. Should be on my doorstep tomorrow. If the new amplifier doesn't help your situtation, then look at the woofer itself. I can keep you posted on my situation if you'd like.
Note, both times I called customer service, they were extremely helpful and I actually talked to the same person the second time I had to call. The serial numbers on both of my EP500s were one number apart. Maybe that will help the Axiom folks determine the source of the bad woofers? Or at least how many may have made it out of their factory.
