arghh

RCA CABLES ARE NOT SPEAKER CABLE!

Speaker cable should be thick to carry the high wattage that flows through it, noise is not an issue because the voltage is so high on the line.

Typical RCA cables carry very low voltage signals so they are much more susceptible to noise.

The larger the core of the wire - the more noise it will pick up.

Computer network cable is designed to handle very very small voltages(around 200mv) with <.05% emi degridation. thats really good.