Im brand new ..and ive heard about these internet subs...XXX and D2 magnum....right now i have 2 12 inch alpine type rs hooked up to a massive Rs 50 amp..I like the alpines alot...but i want a better SPL and a lil better SQ....now im deff gettin a JBL 1200.1 from loneranger.......ive got 700 dollars after sellin my sytem...now 210 for the amp...another 130 for the box from lone ranger also...that leaves me with 360...should i get the 12 inch XXX or the 12 inch D2..which will work better with the JBL...its can be bridged at 1 ohm (1300 watts) ....im 17 i want mostly louder bass than the type Rs but i want a lil better SQ...thanx alot..get back to me soon