About a month and a half ago I received two replacement woofers for my M3ti's from Axiom due to the magnet coming loose on one of the old woofers. The replacement woofers are slightly different in appearance than the old woofers...no foam on the front of the frame, plus the magnet assembly is different in appearance. The speakers to me seem to sound different after replacing the woofers. It's hard to pinpoint, but they seem to have a slightly muted sound...not as crisp as they used to sound. Has anyone else experienced this after replacing woofers? These speakers have always been a joy to show off to friends, yet they don't seem to sound like they use to. Any thoughts?