Summary: The cone separated from the voice coil in 20 days and I was babying to break in. It looked like it had little glue bead. That part seemed weak. Must have been defective cause I have for over 5 years Focal K3 polykevlar 3 ways and they sound great and hold up. I returned the Focal sub for Alpine SWX.
Summary: So i wanted to review these subs because reviews for them are few and far between. So i picked up a pair of these. I had a 12w6v2 in my car previous to owning these subs and i liked them, but they weren't tight enough, more of a boomy sound. Not to say they were bad quality, the JL is a great sub, but more for if you're looking for SPL rather than SQ. The Focals completely blew me away. I am amazed at how tight and accurate the bass notes are.