I had a bad tweet in my M80's and I called Axiom ... Amie had my do a few things for normal trouble shooting. Once it was verified it was a faulty tweet I had a replacement in 3 days. It is not rock science, no offence on that. But, it is realative basic trouble shooting. If the tweets work in the other speak then that eliminate that. It maybe as quack said or a soldering issue and maybe a faulty x-over. But, really it is nothing to take out the mid or woofer and reach in and check. I am not sure if there is a seperation between the woofers and mids/highs, though. and make sure when you put the spaekers back in not to over tighten the screw. Just snug it is mdf and easy to blow out the srew holes speacially on a 1/4 edge> that is the one issue I have with the spaekers i wish the lips were and extra 1/4 wide and the set screws set back a bit more.


Anthem MRX520
M5HPv4
VP160HPv4
QS10v4