Directionality of wire


I am a fan of Chris Sommovigo's Black Cat and Airwave interconnects. I hope he does not mind me quoting him or naming him on this subject, but Chris does not mark directionality of his IC's. I recently wrote him on the subject and he responded that absent shunting off to ground/dialectric designs, the idea of wire directionality is a complete myth. Same with resistors and fuses. My hunch is that 95% of IC "manufacturers", particularly the one man operations of under $500 IC's mark directionality because they think it lends the appearance of technical sophistication and legitimacy. But even among the "big boys", the myth gets thrown around like so much accepted common knowledge. Thoughts? Someone care to educate me on how a simple IC or PC or speaker cable or fuse without a special shunting scheme can possibly have directionality? It was this comment by Stephen Mejias (then of Audioquest and in the context of Herb Reichert's review of the AQ Niagra 1000) that prompts my question;

Thank you for the excellent question. AudioQuest provided an NRG-10 AC cable for the evaluation. Like all AudioQuest cables, our AC cables use solid conductors that are carefully controlled for low-noise directionality. We see this as a benefit for all applications -- one that becomes especially important when discussing our Niagara units. Because our AC cables use conductors that have been properly controlled for low-noise directionality, they complement the Niagara System’s patented Ground-Noise Dissipation Technology. Other AC cables would work, but may or may not allow the Niagara to reach its full potential. If you'd like more information on our use of directionality to minimize the harmful effects of high-frequency noise, please visit http://www.audioquest.com/directionality-its-all-about-noise/ or the Niagara 1000's owner's manual (available on our website).

Thanks again.

Stephen Mejias
AudioQuest


Read more at https://www.stereophile.com/content/gramophone-dreams-15-audioquest-niagara-1000-hifiman-he1000-v2-p...


128x128fsonicsmith
What I gathered from Chris’s article is that:
*He hears a difference but doesn’t feel it’s a "life or death" difference.
*He fairly certain it’s not due to diodic effect.
*He cannot explain it except that it’s not due to diodic effect so simply move along folks, nothing to see here.

How nice that he can relieve us of this "life or death" burden.

Here is a related article on the matter dealing with objectivity vs subjectivity. What I like most about it is the shot of a t-shirt that states:
I am an engineer. To save time, just assume that I’m always right!

All the best,
Nonoise

If Chris has more than one fuse in his system, one reason why he might dismiss the difference between fuse directions as small is because some or all of the other fuses are in the wrong direction, hurting the sound, thus reducing the effect of flipping one fuse around. If the system has only one fuse the results should be quite pronounced, all things being equal. It would not hurt to have all the cables running in the right direction as well for a proper test. Unless the tester is aware of these variables and makes the necessary arrangements it’s like shooting blanks in the dark. I have a strict policy to never let a skeptic test anything. 
don_c55711 posts07-30-2017 5:20amSingle ended interconnects are directional because they are grounded at the source end only, for lowest hum pickup and resulting low noise.
+1 for Don, there’s a "technical" reason behind it, others are just making out something from nothing.

Unless you have some of the 30 year old Audio Technica, Hitachi, Linear Crystal cable, (LC-OFC) of years gone by, which was "truly" crystallised lc-ofc copper "very fragile", trouble was if it was bent more than 30 degrees it cracked the crystal structure and sounded worse, because there was a diode effect at the crack points.
http://www.hifido.co.jp/photo/10/586/58660/b.jpg

With today’s quality RCA interconnects, it’s because most of them use 2 core inner cables "with an earth shield only connected at one end."
This end should be leading to the poweramp end of signal direction, dumping any RF caught by the shield at the least sensitive end of the component lineup.

Cheers George
This just in! Are Anti Cables an example of a one man operation? Maybe. In any case this is the Anti Cable statement on wire direction. Let’s call it Exhibit B. This is taken from the FAQ page of the Anti Cables website. Since the Anti Cables are marked for the correct directionality one can assume Anti Cables, just like Audioquest, controls the manufacturing process, no?

..................

Wire Directionality?
As an electronic engineer I struggled with this topic for quite a while because it did not fit into any of the electrical models I have learned. It simply does not make sense that an alternating music signal should favor a direction in a wire. One of the great things about the audio hobby is that we seem to be able to hear things well before we can explain them; and just because we can’t explain something, does not mean it does not exist.

While wire directionality is not fully understood, it is clear that the molecular structure of drawn metal wire is not symmetrical and it is this physical difference which is consistent with which direction the wire sounds better. When the directionality is “backwards” there is a loss of resolution, cymbals sound like a spray-can and are truncated, voices are grainy and lack presences, and bass is less defined. When the wire directionality is “correct” the music is more relaxed, pleasant and believable. Once you hear the difference, you will never want to have to listen to wire backwards ever again.

All ANTICABLES products have the correct directionality marked with an arrow.


Exhibit C, the Chord Company,

Direction
Almost all speaker cables, in fact almost all audio cables, be they for digital or analogue are, in our experience, directional in that the sound will be better with the cable connected in a specific direction. Chord speaker cables should be connected so that the print on the cable reads in the direction of the signal. In effect, the C of Chord should be nearest the amplifier. The fact the cables are directional is a subject of much debate but our experience is that these differences range from slight to quite marked. One of the main areas that can be affected by the direction of the cable is timing and coherence. With the cable connected in the correct direction the sound will be more articulate and involving.

Cheers, Geoff Kait