I just spoke with the company I bought the XLO from and he says to hook Red & White together for positive, and hook Black & Green together for negative. I asked again, "so you are saying I should use all 4 wires to feed one speaker"? His reply was that it would strengthen the signal to each speaker and to use banana plugs to connect it all together. Does this sound right?
The wires inside the cable seem to be 14 gauage according to my wire stripers.
On the outside the cable says:
XLO/CDA Contininuous Cast Copper Cables for Design Application E119037