Originally Posted by
P057
hmm 100ft of UTP CAT5..... 9 bucks (plus 4 for shipping) roughly 13 bucks
vs
100ft untwisted pair of 18ga speaker wire - 20 bucks not including shipping.
then again cat5 cables are thin as crap, like 24-26ga or something vs a modest 18.
signal wires arent supposed to be thick

The thicker the core the more emi it will conduct and the more shielding it will require to do the same job.
Your RCA cables probably have 22ga cores with a single layer shielding.