i need some help. i just bought a orion hcca 15.2 and i need help with building a box. i need to know how big it should be and what port size it should be. for both spl and sq if possible. i have looked at other forums and on orisons web sight but i want someone else's opinion. my largest dimensions are 12,35,35. also i have a bamf 5500 running at one ohm. is that enough power or should i get another and strap them or just buy a new amp. thanks