I just bought a clarion cz500 off amazon and just figured out that it has only 1 rca jack for the sub out. I have a kenwood kac-x20 2 channel for my amp. It says on the amp: (Bridged- L.Chnl) Does this mean that it only needs one rca plugged into the left input when it's bridged to work? Is it bad to have one sub out? It doesn't seem like it should be a big deal.