Okay i have 2 rockford t2 12s i notice a werid poping nosie coming from 1 of them. I pushed on the dust cap checked the vocie coil and there seems to be no scratching nosie coming from it. theres a tiny dent in the dust cap i shook the sub theres no rattle. If i tap the dust cap there is a poping nosie coming from it. I i push the sub in a lil when it hits the rattle is gone any idea on whats wrong with it i miss my t2s