Each set of those speaker wires coming out of the crossover should then connect to its own speaker plug that the Alpine PDX amps have. The amp itself only has 5 speaker output slots (2 for front speakers, 2 for rear speakers and the 5th for a sub). Unless I have it wrong and all 4 of those speaker wires coming out of the crossover plug into 1 Alpine connector, which doesn't make sense to me. I've tried searching for some type of visual guide and can't find one here or elsewhere online.
After looking at the wiring diagram on the back of the box (duh) I guess I need to decide whether to run the components as single input or bi-wire. And the other question is should I bridge the 4 channels from 4 into 2 and if so, how to do this?
FWIW my birthsheet rates the output of the 4 channels at 113 each.