I have a JL 10W3 in a JL stealth box. My question is just recently the sub started to have a buzzing sound when the bass hits. It sounds similar to if the foam surround had a tear in it, but I can't find anything wrong with it visibly. I have had it for over a year now and it just started today. Does anyone know what the problem could be?

Thanks in advance

 

Try pulling the sub out and see if something is touching the cone inside.