I have a 400w Fosgate amp, 2 12in Pioneer IMPP subs, Monster wires, and a ****ty box (looks like a old craiger box ) I am swapping the box soon but Im wondering if its the box that's making the subs sound like this. The box has 4 ports and I don't think the IMPP's are aloud ports. I think they are flexing to much or something because of those ports.

any suggestions?

*no smart ass " yeah toss it off a cliff" BS or I'll smack you