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Quick Study - why direction matters in an AC circuit

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In Reply to: RE: Fuse Direction Fix posted by pictureguy on January 28, 2023 at 15:46:38

You're looking at it incorrectly. The direction of the "audio signal" in speaker cables changes direction on + and - wires continuously, at the rate of the instantaneous audio frequency. When the signal on the + wire travels toward the speaker terminal the signal travels in the opposite direction on the - wire. And vice versa. Only signals traveling toward the speaker produce changes in the sound (by interacting with the voice coil and speaker diaphragm. You can ignore the signal when it's traveling away from the speaker on either wire. This logic holds true for all wires in the system. Since wire is asymmetrical physically and electrically there are differences in sound depending on the orientation of both + and - wires.

Follow Ups:

RE: Quick Study - why direction matters in an AC circuit - sony6060 05:33:58 06/17/23 (3)
A fuse used on AC has no direction.
- Direction of fuse in AC circuit - geoffkait 04:06:39 07/11/23 (0)
  For the umpteenth time direction matters in an AC circuit because we only care about the signal when it's headed toward the speakers, downstream. When the signal goes away from the speakers (upstream) during the half cycle of alternation of current AC you can ignore it since it doesn't affect the sound. That's true for both the fused wire and the unfused wire of the AC circuit.
  This should not be surprising since the AC wires themselves are directional. Thus, you'd be well advised that if the fuse is in the speaker the speaker cables and the internal speaker wiring should also be oriented in the correct direction.
  What isn't necessarily obvious is how the signal coming into the speaker on + wire and - wire interacts with the voice coil and the permanent magnet of the speaker. That's an assignment for the reader.
  
  Edits: 07/11/23 07/11/23 07/11/23 07/11/23 07/11/23
- RE: Quick Study - why direction matters in an AC circuit - KanedaK 21:56:49 07/10/23 (0)
  Well yes, it does. It is SO obvious when listening: the wrong direction consistently sounds flat and dull. It's not subtle at all.
- RE: Quick Study - why direction matters in an AC circuit - geoffkait 07:18:23 06/17/23 (0)
  What evidence do you have to support your argument? That you read it on the internet?

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