ok i have a kenwood excelon kac-x810d amp with a kicker L5 12" sub. I got it all hooked up but i would like to no what to do when it comes to wiring the sub. What is bridging and what does it do. Do i need it? Also if anyone knows any settings that i should do for my kenwood that would be great. But i really need to no if it matters where i hook in the sub wires to the amp because my amp goes ++--. i have the wire to the first plus and first minus. Also when you take the sub out of the box should it be wired in series or how should that be done. Thanks Alot