sounds like your box is coming apart a friend of mine had the same issue pulled the carpet back off the box and you could see it coming apart just a thought
Thats what i am thinking, Ive spent 1700 dollars on this system and he refuses to take a glance at it. He claims its my truck rattling and i can bring it in next week again for another check. Ive spent over 4,000 dollars at this store, ranging from car alarams , remote start + Smart Phone start , 2 amps, and many subwoofers. this is the last time i let someone else install my stuff!