im using a 2 channel amp, and one sub. bridged. pos on one channel and neg on the other run to posotive and negative on the box terminal. inside the box, from the terminal i got posotive going to posotive on one voicecoil, negative to negative on the other voice coil, then posotive to negative on the remaining 2 terminals on each coil. is this the correct wire setup for a single woofer? its a 4ohm maw12