Wouldn't the size and length of wire change it's resistance? And could that somehow effect the sound quality someway? Higher resistance is used within the crossover to filter certain frequencies. I think the best way to go is fiber optic cable and the signal would be totally pure and unaltered. As far as bi-wiring/amping goes...lets get Ian to bi-wire some M-60's and get a frequency response and waterfall measurements and we'll know scientifically how it effects them.