Hey! I'm getting this powered sub from sound ordnance, http://outlet.crutchfield.com/p_777B8PT/Sound-Ordnance-B-8PT.html?cc=02&tp=114 , I can't hook it up to my battery though, so I am doing it differently. I am getting a 600 watt power inverter that I am going to use to power the sub. I am...