Ok so yesterday my sub (JL 10w6 v.1) sounded like it had a bit of a rattle to it. Its in a 1 cube box with the port tuned to 36Hz. When i noticed the rattle i immediately turned my system way down, still listening to make sure i wasn't just hearing something else rattling. Today its still doing it so i decided to just leave it off. The sub is thouroughly used and i don't know much about how it was used before i got it. (Except that my neighbor was throwing it away with the two other blown ones, but i just couldn't let it die). I had to re-glue the dustcap, but it had been running fine since then, about six months. So have any of you had any problems like this? And is it fixable? Thanks in advance.