It pays to keep an open mind, just not so open your brains fall out.
Sagan
Sagan
What do we hear when we change the direction of a wire?
Maybe someone already explained this, but I simply didn’t have the time to look through the whole thread. Due to manufacturing tolerances, a cable isn’t electrically the same from both directions. They did. I don't think the question is about whether it has a directional component, but whether it would be remotely audible. It is not. The lengths of the cables in home audio are very short. Transmission line effects, even worse case don't come into play and would be similar enough to not create a difference. Add in impedance goes way up at audio frequencies. From a simple two port model, the differences, again, are so small, so not matter. Obviously we could make an intentionally directional cable. That would be a bad idea. |
mapman's avatar We are talking about any short piece (say 5 inches) of single-core metal wire of medium thickness. All wires sound dissimilar when reversed, only to different degrees. To feel it clearly, you must have a special testing system. The simplest possible tube amp with no feedback which is paired with a single broadband speaker. The one I handmade for tests is: https://www.backtomusic.ru/wp-content/uploads/2021/01/schematics-testing-audio-equpment.gif. Using it, you can evaluate the coloration and right direction of almost any radio component (L,C,R) including wire. The test sample is connected to J1 and J2 connectors. |
Using it, you can evaluate the coloration and right direction of almost any radio component (L,C,R) including wire. Ok now we are getting somewhere. Have you done that? Where are the results published for those who might be interested? I would believe whatever differences there are would show up most in cases where there is an impedance mismatch which is much more likely with zero feedback amps, but that should not really matter if one has addressed impedance matching between amps and speakers properly, which is the right way to do it for best results, so in that case impedance matching issues due to a zero feedback amp is a moot point. |