Using different gauge wire for biwiring

You can use different gauge wire for highs and lows... thicker wire goes to the woofers.

Most internal speaker wiring is done that way. Also, some manufactured cables such as AZ Double Barrel use the same strategy (6awg and 10awg).

I've compared using smaller guage cables on top vs. using the same cable for top and bottom. The most phase correct result comes from using the same for the top and bottom.

Inside the speaker, the mfg may use different size wires for balancing the sound but, in the end, the speaker is designed to be hooked up with a single wire speaker cable and sound correct. If you slightly reduce the amount of energy to the top by using a smaller ga cable you are disrupting the balance of the speaker the way it was designed.

Good luck..

if your pigtailing the speakers bidding post? Then the distance from post to post is to short to be noticeable.

If you slightly reduce the amount of energy to the top by using a smaller ga cable you are disrupting the balance of the speaker the way it was designed.

Hifichic, I agree with the electrical theory but I question whether there would be an audible effect of the two different sizes because the current demand is typically lower to the high frequency drivers due to their higher sensitivity and lower resistance. I think the penalty could possibly be higher if the MF/HF and LF wires are the same gauge but the resistance of the LF wire prevented adequate current transfer to the generally lower sensitivity bass drivers, especially in the case of long runs. That said, most audiophile wire is likely oversized for the required current flow, and I am sure the 6awg of AZ's Double Barrel is probably not needed....except for welding.