i'll have two 12.s in a sealed 1.9 cu ft enclosure. i have 2 12.1 infinity perfects right now and they're great subs, but i want much more spl. i think what i want are sql though. i'm probably gonna get a 1ohm amp, but it can't be any bigger than about 18 inches long. i'd go for those xxx's if they would wor good in a 1.9 (total for 2) foot enclosure. any suggestions on some great subs. i want them to blow these perfects away...........ty.