with that amp running one 12 in a ported box you are going to blow it...i got that amp running 2 12's at 1 ohm and i've blown 4 speakers already...they sound great in a ported box but i would go with a sealed box so u can play it with out blowing it

do u have a dual 2 or 4 oh m sub and are u going to wire it in series or parallel