I have a box for 2 12s and I previously had 2 pioneers in it, then I had one of the pioneers and a JL 12w1v2, and now I put the JL and a Kicker CVR, but now it rattles. I know for sure that it's the Kicker because when I take the wires off and only the JL hits, it doesn't rattle. I take the CVR out and it doesn't rattle when outside the box, but like I said the JL doesn't rattle it even at high volumes. What's going on? I thought it was air escaping, but there are no holes in the box. And I put the CVR in another box and it does the same thing.