Speaker cable and wire properties



14 guage wire will work just fine. Speaker circuits are low impedance balanced pairs, which is about as tolerant and invulnerable to noise as you can get. But I think I would still twist the wires together to form a braid.

If you put signal wires in a metal conduit, make sure the conduit is grounded. Never run wires in an ungrounded conduit, particularly low-power, unbalanced signal wires, because the ungrounded conduit will actually couple AC noise into the signal wires, acting as a sort of concentrator.

Here's a link to a page about Belden's speaker cable, and it includes a chart of size/power/distance/ for sound systems. This type of product is best, even better than exotic "boutique" cables. For those of you that like to wind your own coils, here's a good program that gives specifications of various magnet wire products.



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