When I turn on my music, I hear no sound until i turn it to 50. and then i hear lots of Static. How do I fix it, yes I have an AMP hooked onto it. I would take it back to the place which install my entire sound system, but they blew up a sub and refused to fix it or anything else on my car "Good way how they ruined a 3K sound system but that's beside the point." Please any help or suggestions. I have Hertz Speakers all around my car. and the Amp is made by JL audio. Also have 2 Subs by JL audio also their w06 or something like that.