bglandon23

hey guys got and issue here. about 3 months ago i intstalled 2 12 alpine type r's being pushed by a jbl 600.1 sounds great but now occationaly (sp) at low volumes my will thump randomly. what is this? is the amp going bad? thanks for any help

japocalipse

my brothers speakers used to do the same thing, he had a bad ground and both of them would randomly thump........maybe you should try a new spot for the ground

bglandon23

thanks i will try that