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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: Metal Grain Structure

Posted by Davey on May 22, 2023 at 06:55:19:
You don't need two wires to have a circuit....technically. :)
You need two potentials to create a source, but you can connect those two with a single wire/circuit.
Your house has numerous appliances that consist of single wire element that operate on AC.
In fact, the standard amplifier/speaker interface is actually a single wire series circuit. It might not look like one, but it is. (Ignoring the minor intrinsics of the connection cable.)
The illustrious Mr. Kait will accuse me of semantics, but I don't give a shit what he says.
Dave.