I have a Sony Xplod head unit and a JBL GTO 6000 6 channel 1100w amp with two JBL GT3 12" subs and two 200w 6x9 Sony speakers. I was looking to wire the subs bridged of two channels each and the 6x9s of the other channels. I was looking for advice on how to bridge channels and which of the 3 sets of phono ports the cables from the head unit plug into. Thanks for any help