fixing vibrations in doors

Hey guys, I have some 5x7 kappas in my front doors, and for some reason, the driver side one is making this awful vibration when there is any amount of bass. Are any of you guys getting this as well. Im thinking about taking off the door panel and seeing if anything is loose. I hope that the speaker isnt blown. I mean they are infiniti kappas.

ur speakers may not be set in all the way. mine where hitting the grill of the door panal.