[AirAllen01]

That means it's a DVC (dual voice coil sub). One set is a positve and negative and the set on the other side is also a positive and negative. Guessing the subs are dual 4 ohms (most DVC are), then you can wire your sub to either 8-ohms or 2-ohms. You have to use both or the sub won't work. If you wire from positive to positve and then to the positive on the amp, and negative to negative and then to the negative on the amp, you're running the sub down to 2-ohms. If you wire positive to negative and then to the negative on the amp, and negative to positive and then to the positive on the amp, you're wiring the sub to 8-ohms. If you want more bass and your subs can handle the power, then wire them to 2-ohms apeice and bridge them to the amp at 1-ohm, but only if the sub can handle the power, and the amp is capable of taking a 1-ohm load.