bi-wiring typically achieves very little, and why spend the extra $$ on more wire and connectors and junk. i would only run more than one wire to your speakers unless you are trying to get more power to them by using two amps to run each speaker (100 X 2). that is in a sense how i have my system setup, it is technically bi-amped, but i only do it so i can integrate my amps better and get more power to my speakers.