RCA cable design

Tough crowd. Signal doesn’t flow. Current flows.
The signal is a time varying electric field between the two conductors. It exists at the input of the cable (source) and everywhere along that pair or conductors.

Where is the signal (electric field)? Simple answer, it is everywhere.
Now that electric field will tend to induce some currents (that do no work) in the cable.  That is where the mischief or magic happens. Some mischief can sound good, but its still mischief.

Tough crowd. Signal doesn’t flow. Current flows

Current doesn't flow. Current is.  Electric charge flows.
(crowd can be even tougher)  :)

Here we go.. Ok is that the question? OP what was the question again?

Now were talking about flow? Current? but not what he ask..

He ask if two different conductors, made a difference, ground, vs signal (pos)? I say yes, it does.. Again I still like the answer jder, posted.

I say that because I've mixed and matched on speaker cables, and it made a big difference...Copper/silver ground, with copper/copper pos, and a weave..

Reverse the two, use the copper/copper on the ground and the silver/copper, for the hot. On my system the tweeters will boil your ears, and the mids sound like they are wired out of phase.

Reverse it.. Wonderful again. Actually one of the better combos I've done, for small planars, and a splash of tungsten with copper, not silver, is pretty darn cool too...

Regards

My question in different words (perhaps) is if ground is zero potential (voltage), then the hot (+) caries the "information" to the component or speaker and it dissipates to zero at ground. This is only for single ended, not balanced which flip flops the signal across +/- voltages. So if the ground wire has zero potential (no signal) then how important is the quality of the wire?

The signal ground using  single end connectors is the whole chassis. The signal is the varying voltage in the center wire the ground is the reference. Not sure what you mean by how good is the quality of wire. Copper is good for conductivity and gold is good for connectors as it doesn't oxidize very easily.