I biwire my Apogees, but that's no surprise because they pretty much HAVE to be biwired due to their low impedance. It's very noticeable, but maybe not so much on other speakers that present less of a load to the amp.
That being said, I use the same wire on both tweeter and woofer. I do see some biwire cable companies using different wire for tweeter and woofer (or perhaps just different gauge). I would think you would want to retain the character of the wire on both top and bottom, so using the same wire for both makes sense to me. But I can understand others thinking "more transparent on top" or "more tingly" and using silver on the tweeter with big gauge copper on the bass.
What do you use?
That being said, I use the same wire on both tweeter and woofer. I do see some biwire cable companies using different wire for tweeter and woofer (or perhaps just different gauge). I would think you would want to retain the character of the wire on both top and bottom, so using the same wire for both makes sense to me. But I can understand others thinking "more transparent on top" or "more tingly" and using silver on the tweeter with big gauge copper on the bass.
What do you use?