hey yall, so I would like some input on a problem I am having. first I have 2 sundown x 15 v.2 and powering those are 1 Rockville phantom m2 for each sub running on a capacitor. now they sound great in the box which is built to 32 hertz and is built to spec from the manufactures specs and has no air leaks. altho the sub has a 4-inch exertion limit before the mechanical bottom but when I go to the low notes they do not hit hard and the sub prematurely bottoms out. the subs are not yet broken in all the way and I wonder if that plays a role? can anyone help me figure out why}