I am about to buy a rockford fosgate HX2 12. I have a stage 3 q-logic box for it. The port is 4" wide and 12" long. Im wondering if it is too long. I blew my subs one time and only had one pioneer 12 in the same box and it bumped believe it or not. But i just wanna make sure so i can get ready to fix some stuff. And also do you think my 800 watt Kenwood amp will push that sub good enough? I think it will and I think its gonna bump pretty hard. And please, if you dont know what your talking about dont say anything. Thanks.