mitch2
Geoffkait: A simple resistance measurement of a length of wire taken from the spool reveals the proper direction for the entire spool.
This indicates the simple resistance measurement will show differences in the resistance of the same piece of wire depending on directionality, correct?
>>>>Yes
If so, would the manufacturer then orient the wire direction for their cables/fuses so the signal flow is in the direction with the lowest resistance?
>>>>Fuses are not controlled for directivity as far as I know, only cables with directional arrows. That's why fuse manufacturers tell customers to try them both ways. Yes, the lower resistance would be in the direction of toward the speakers.
Do you have any idea what the delta in directional resistance might be for a typical audio cable, say an 8-foot speaker cable with cross-sectional area of 12 awg?
>>>>No
How about expressed as a percent of the total resistance?
>>>>>Dunno.
Is resistance the only electrical property affected by wire directionality?
>>>>Obviously, the reciprocal, conductivity.
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@geoffkait And since ALL fuses are directional we can probably conclude it’s the wire itself, not (rpt not) the dielectric material, at least not (rpt not) to any significant degree. This whole wire directionality thing is actually an excellent example of Occam’s razor: Suppose there exist two explanations for an occurrence. In the case of two possibile explanations the simpler one is usually the correct or better one. Another way of saying it is that the more assumptions you have to make, the more unlikely an explanation is.
I think you may be misusing the razor. |
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terry9497 posts08-18-2017 11:31am@jea48
Yes also to IC's.
Further to the above, I forgot that about 20 years ago, when I saw IC costs going stratospheric, I decided to do an experiment.
I
built a cabinet for ARC SP10 pre-amp and Nakamichi CR7, which was a
Faraday cage. I then noted that, at line levels, capacitance was the
enemy, not inductance, so I found some very pure 4 nines silver 24 AWG
and had it gold plated.
I drilled holes in the bulkhead between
the ARC and the Nak which were 2" apart and threaded bare wires through
them, and then protected the wires with 0.375 teflon tubing, which
touched the wires scarcely at all. Thus, compared to conventional co-ax
of whatever manufacture, dielectric absorption was near zero, as was
capacitance. Cables were 26 inches and terminated with ETI RCA's.
I
was then in a position to conduct a single-blind experiment of
theoretically optimal cables compared to Canare Starquad. An expert test
subject (my long suffering wife) was unable to detect the difference
reliably. Of less interest, because I was not a blind subject, I was
also unable to hear the difference.
This is NOT definitive
because the subject was not required to make many, many repeated
observations for statistical analysis. But the point was clear: there
ARE things that yield readily detectable differences, like turntables,
tonearms, cartridges, SUT's, tubes, pre-amp topology, power supplies,
capacitors, resistors, amplifier topology, and speakers.
So the latter is where I spend my money.
Terry9, Thanks for the reponse. Next question. When you built the ICs by chance did you run the two wires as they come off the spoil in the same same direction? Or did you reverse one in the oppit direction? I assume you used solid core wire. Is that correct? By chance did you ever try reversing the ICs and check to see if the ICs were directional? Please read this Audio Asylum thread. Post back your thoughts. https://www.audioasylum.com/cgi/t.mpl?f=cables&m=12332 |
Al, (almarg), Thank you for responding to my earlier post directed to you. If by chance you are still following this thread I have another question for you. I ran across this thread, in the quest of finding more information on dielectrics and how they affect the signal passing through them. https://forum.audiogon.com/discussions/cable-dielectric-cause-of-artificial-soundI read this post of sean’s sean
6,229 posts10-09-2006 11:49am
I stumbled across a very curious phenomena pertaining to cable dielectric at work the other day. Nobody that i have discussed the matter with can explain what is happening, yet they have seen the very easily measured and duplicated results that i’m obtaining and can’t deny them.
I have ideas as to what is causing this curious phenomena, but don’t want to speak up about this as of yet. I will say that what i’m seeing tends to make me believe that dielectrics, which aren’t supposed to conduct, have a polarity / directionality to them i.e. they conduct better in one direction than in another.
I know that some companies already have cabling on the market that supposedly deals with this subject, but i don’t think that they fully understand exactly what is going on here. I just hope that Clark Johnsen doesn’t see this. Something about polarity based issues tends to get him in all worked up : ) Sean I will say that what i’m seeing tends to make me believe that dielectrics, which aren’t supposed to conduct, have a polarity / directionality to them i.e. they conduct better in one direction than in another. Sean never said how he conducted the test. Any thoughts on his comments? |
