You might want to think about another sub. I've become a big fan of GR-Research servos. They're very musical, plus the amp has both high/low inputs plus lots of flexibility in crossover point, slopes, phase and level. Believe me, lots of flexibility is a good thing. The smallest setting tweaks can make a big difference.
I'm running the open baffle version, and it's really affordable for the sound you get.
Of course our friends at ACI and VMPS offer high quality musical subs too.