Why is the bass in my car starting to have a static noise?

-I've had my car for 3 years and it's a new car. When I played music with bass before it sounded fine, now it has a static sound to it and it sounds like it's coming from the trunk and sometimes my side door. How can I get rid of the static noise in my bass. I don't even play my music loud, but I like bass in my music. Help!yeah your just going to have to replace them. bass kills speakers, and car companies know this. they just want it to sound good for the time that its on the lot so they put "premium sound" and other junk in that is very unreliable.Your bass speakers are blown and need to be replaced.