Speaker Wire Gauge

[jkwest]

the more wire you have in the line, the more juice that you can supply to the speaker at one time. I have 14 on all of my speakers, except my outside ones. I used 16 for that and if I used my speaker switch from one side of the outside to the other, or both, then you can hear the actual degradation of sound coming from the speakers.

The longer the run, the fatter the wire. Anything over 50 ft do not use less than 16...thats the rule of thumb.