what ^ everyone... Im new and all to car audio and need help with abox... I have three infinity 1230w subs (SPECS: SVC, 300 watt rms, QTS .54, Ported box volume (cu. ft.) 2.0, Sealed box volume (cu. ft.) 1.25). Also the recommended enclosure type is Sealed or Ported. The amp that i will be running is the hifonics bx1205d (SPECS:1200 watts x 1 chan. @ 1 Ohm). My question now is I plan on buying a prefab box (since im new and everything and this seamed the easiest way to do things) theres one sealed with 1.3 cu. ft. per chamber (also theres one with 1.69 cu. ft. per chamber). For ported the biggest one i can find has 4.9 cu ft total. Which box do you guys think I should go with the 1st (1.3 cu ft per chamber) 2nd (1.69 cu ft per chamber) or 3rd (ported 4.9 cu ft total) according to specs and amp power? By the way I want spl but I HAVE to HAVE SQ!!!