i got 2 1222d 2ohm type r 12's and a mrp-1000 alpine amp... I listen to hip hop... I bought in a sealed box, i need a ported box, will have made custom, I wanna know what box will be best, cu/ft, hz, ports/ port size ect.... alpine recomands .75 to 2.0 per sub, i heard 2.2 per sub was "sweet...