Haha...
Looks like I hit the hornet's nest with this one. Thanks for all the info, I think.
From my son the Electrical Engineer:
For low-frequency applications ( Under 500Mhz , or applications in which the wire will be less than 1/10th the wavelength passing through them ), the quality of the speaker wire does not matter. This is the case for audio. The Kappa 9’s are rated at 4-6ohms, and the voice coil windings in the speaker are typically 2/3 that rated impedance -- (2.68-4) ohms for the Kappa’s. As long as the DC resistance of the speaker wire is fairly small, <1/10 for good measure, there will be no degradation of sound. Using the worst-case coil impedance and taking a 1/10 of that means we have a constraint of .268ohms our speaker wire can have before it starts degrading the signal. How hard is it to get that resistance? Using an AWG resistance guide, and noting that we are running 12 AWG on our speakers ( copper wire is 1.588 ohms for 1000ft of 12 AWG) , we would need roughly 84.38 feet of speaker wire ( half because we are running two wires ). Even noting that if the Kappa impedance dips down to .8 ohms (.08 constraint ), you still have 25.18 feet of wire to work with. Note that this is a worst-case scenario, on an already tough-to-drive speaker. Most speakers are rated for higher ohms. My suggestion is to keep it to 10-12 AWG copper, and keep the wires as short as you can help it. As long as your speakers aren’t abnormally far away from your amplifier, you should be fine.
Im going with this...
Thanks for everyone's input.