each pair of amps should go to the same speaker. each amp powers 1 set of voice coils per speaker (each speaker as 2 sets of voice coils). i would say, theoretically since you are using 1 signal, all amp channels will have the same input-> same output, so it "should not" matter what you hook up to what, as long as you get the polarities correct + to + and - to -...


Are the binding posts labeled in any way?