hey a friend got 2 of these pioneer TS-SW1241D 12 inch subs and they say that they are dual 4 ohm but each sub only has 1 positive and 1 negitive terminal so i coudlnt figure out how to wire them both together to get 1 ohm or am i just missing something i dont know if someone could explain to me how you wire 1 ohm with just that please let me know its being a headache thanks

-Richard