I should also state that this smell happens on ANY song, not a low bass, or metal...ANY song. The sub itself, from the outside of course, looks perfectly fine...brand new even...and I'm not exagerrating. I had this sub, in this box, playing off a sundown 3000, for 5-6months with no smell whatsoever except for a time I played someones version of trunk bang that they slowed and I think added clipped bass on the way low note. Other than that...no smell. BUT, I did have some problems with it bottoming out near the end of its play til now on certain songs. I think maybe that whole boc design is just not good for this particular sub or something. This thing NEVER metered well either. IDK if I got a bad one to begin with or what, this thing is WAAAAAY beyond warranty lol.