yeah ive only had my 10" kicker l7 for about a week now and i think its already blown. I had it hooked up wrong for the whole time untill today when i found the right adapter to match my bose system. But now it sounds like shit, when the bass hits hard it kinda pops. I also pushed on the sub and it moved pretty easily, one of my friends told me that was a sign of a blown speaker. I have it hooked up at 1 ohm "stable" but i doubt that makes a diff. I got it refurbed from ebay and says it has a 90 day waranty. Could i still send it back to be refurbed again? how much does that usually cost? Or is the speaker fine? All i know is it sounded wayyyy better when it first came.