Jensen JX1200 Car Subwoofer "speaker works push cone down" Questions

works, i dont know what is wrong with it, there is no cracks, nicks, and has never been dropped, i cant figure out whats wrong with it, can anyone help? Does it smell funny?Smell around the top of the

...Speaker lesson here. For space and time, I'll not get into certain nomenclature. Working from top to bottom, you have the cone, rubber surround, basket, spider, voic coil former, voice coil, and the ...