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Technical and scientific discussion of amps, cables and other topics.

RE: Two statements in OP were left addressed.

So perhaps we are talking about two different views, a more conceptual one, like the signal travels in one direction from the source through the system, to the speaker.

What i am talking about is how that "signal" is transferred via wires as a current and voltage through two paths or a pair of conductors to the loudspeaker. Where the current that makes the voice coil move and produce sound is traveling equally in both conductors but in opposite directions and if a coax is used, equally on the inner and outer conductors.
To have a complete circuit, where a signal can be transferred electrically, you need both paths, with AC like audio one is positive when the other is negative. "Ground" is often used for one of those paths.


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