Speaker Cable Different for 8ohm vs 4ohm

So, what values of resistance and inductance put a speaker cable in the 'low' category. What measured value should you look for? Also, does that mean good 12 guage is better than a good 14 guage when connecting to a 4 ohm speaker?

Thank you for excellent information. I am using Magnepan 3.6's at the moment with six foot runs of DH Labs Silver Sonic Q-10 Signature biwires. The Q-10's use one run of smaller wire for the tweeter/midrange and a heavier run(12gauge I think) for the woofer connection. I've used this cable for years with no complaints. I believe that it is solid copper with a very thin cover of silver.

I am looking at the new Magnepan 20.7's and if I go there I will have to change the speaker wire since they are not bi-wireable as a result of the new crossover design. Also, I will probably want to extend the speaker cable length to around eight feet. The six foot runs are a bit tight.

I may just go with DH Labs single runs but I am open to sugestions for a really top notch speaker wire that works well with the 20.7's.

Al,

Where can I find an impedance curve graph for Magnepan 3.6's? I 'Googled' this but could not locate any graphs.