In article , "mc" wrote:
When I think it needs to be:

audio_generating_source - conductor wire A - destination device -
conductor
wire B - audio_generating_source


That's what it is, and conductor wire B is the outer shield of the cable,
which is called "ground."

Is called ground or is it connected to ground?

I "think" (this thread has made be rethink a lot of stuff I thought I
understood) I understand what ground means in DC, or more specifically, in a
car's environment. "Ground" in that sense usually means (e.g., is synonomous
with) "the negative battery terminal" (unless you have a postivie-grounded
battery, which would indicate the positive battery terminal). For example, the
conection of say a car radio would generally be:

battery+ - conductor - radio - conductor - metal body of car (aka
"ground") - battery-
which completes the circuit.

I understand "ground" in DC circuits to be synonomous with either the
postive or negative battery terminal.

Audio systems do not have, or require, rods driven into the ground. Let go
of that concept. That is not what "ground" means with an audio signal. Let
go of that.

I have to figure out how to read old posts on usenet so I can re-read you
guys' advice over & over til I get it.