Ok went and bought a alpine type r 12 for the jbl bp300.1 amp today. We picked up a flea market box for this setup. It's slot ported. The guy wired it for 1 ohm. So from the amp to sub I just connect positive to positive and negative to negative and its 1 ohm correct? Since it is just one sub I leave the other sub connection alone right because it has 2? Could you please tell me a good spot to set the input level, lpf freq, and bass boost. I just want to make sure so we dont clip or blow the sub. With my amp it should get decently loud shouldnt it?