When I bought my first pair of speakers that two sets of terminals, I used the jumpers that came with them and them ran one wire to each. My thoughts were that would equalize the signal to each. I tried all 3 combinations and never really could say one sounded better than the other, but "my" logic lead me to believe that using one of each would be best.
Just a third option not mentioned here.
Just a third option not mentioned here.