i currently have one 10" alpine type-x in a slot vented box with a kicker kx600.1 amp. I want something louder. I was thinking about two alpine type-r 12s that i can get for roughly 100 bucks each off ebay, which would run off the same amp. I was also wandering about the re se, re sx, infinity kappa perfect, and image dynamics mid-level sub ( i cant think of the name right now). In any case it would be 2 12s. Which do u think would be the loudest and still sound clear, while staying within $300 and hooked up to the kicker kx600.1. Mines rated at 710 watt rms. Thanks.
I like the ID subs myself although I haven't " owned " one out of my big collection lol.
You can also check out the CV Vmax. I wouldn't go w/ the Type-R unless you go w/ the old model. New model is 500Wrms each. Check out the REAudio RE 12s and the Kappa Perfects. Those would be my choices. IDQ is good as well but you'd be underpowering them (500w)