by Jeff Fisher
Four conductor speaker wire usually has a black, green, red, and white (or yellow) wire.
Although there is no standard that we know of, we have found that most contractors use the following logic:
Since two conductor speaker wire usually has a black and red conductor,
and the black is designated "negative" with the red being
"positive", we use those two conductors for the first speaker.
Which speaker? The left, because we do many things from left to right.
This leaves the green and white (or yellow) conductors for the right speaker. Which should be negative? In AC wiring, green is the color of an earth ground, so we use that as negative. Which leaves white for positive.
|
Speaker |
Terminal |
Wire Color |
|
Left |
Negative (-) | Black |
|
Left |
Positive (+) |
Red |
|
Right |
Negative (-) |
Green |
|
Right |
Positive (+) |
White or Yellow |
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