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In Reply to: DIY AC powercord direction posted by steppe on December 30, 2006 at 12:42:54:
This has to be determined by trial and error for each piece of wire. A cable comprising three wires may have two or three of the wires aligned.This is most easily heard by making an RCA interconnect from the wire under test, keeping track of the direction taken off the spool. Install the interconnect in one channel, and mute the other channel. Listen to a vocal recording of a singer with a wide range with the cable in both directions, and use the wire direction that gives the best midrange performance.
The test procedure for multi-conductor cable is more complicated.
Many related parts of audio cables, such as shields and outer jackets, also have directional character.
It is true that audio signals are alternating-current. However, energy flows from the source to the load in every cable application, and some (most likely all, but I can't state this categorically) wire delivers a warmer tonal balance in one direction compared to the other direction.
Follow Ups:
the "Flat Earthers" will be after you!! :-))Regards,
Make an IC out of powercord cable to determine direction? Have you done this? What were the results?
I've done it for interconnect cables and similar things to determine direction of auxillary cable components. My mentor used the process in making power cords, speaker cables, and interconnect cables. He is retired now, but his cables are still highly regarded. I've said enough about it.
Especially IC's. On powercords, I've made many DIY & have never used cable w/lettering/printing on it, so no way to ascertain a direction from a manuf. standpoint. When I replied it doesn't matter in my initial response, I was going by my own experiences. Perhaps I should have elaborated more.It might yield interesting results but I typically use 12 ga. wire for powercord & I'm not too crazy about modifying something that's set up for 20 something gauge.
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