Jea48,
If the signal is altered from one end of the cable to the other it is absolutely able to measured in a scope. That is what scopes excel at, measuring signals.
So we can measure a bunch of different frequencies and see what happens to the signal, flip the cable, repeat and compare. Or we can use a harmonic distortion analyzer and do the same.
For a cable to sound different in different directions there must be more distortion one direction than the other.
At work we do a lot of measurements well below 10dBmicro, tiny tiny amounts of signal strength, nothing near the level of power that would move a driver.
Kijanki is doing a much better job of voicing my concerns than I am. I appreciate that. |
An electromagnetic wave is not current. They are completely different animals. Even their units are different. The electromagnetic wave is comprised of photons. That's why satellite radio signals move at light speed. In fact in a vacuum they can ONLY move at light speed because the speed of light is constant in the universe. |
If the signal is altered from one end of the cable to the other it is absolutely able to measured in a scope. That is what scopes excel at, measuring signals.
So we can measure a bunch of different frequencies and see what happens to the signal, flip the cable, repeat and compare.
12-18-14: Scvan
Scvan, Forget flipping the cable end to end. I just want to know if you can hear an audible difference in audio cables, as slight as the differences might be, can you then measure the differences using a scope. |
Jea48, directionality of a metal conductor is produced by the orientation of the crystal structure as it is pulled through the final die. As least that's what I think. The directionality is independent of the velocity of the signal, I.e., the audio signal. I also do not happen to think the dielectric material affects the velocity of the signal. As I already said I think the velocity of the signal is fixed (constant) for a given medium, I.e., copper or whatever. Now if you are asking me how the dielectric material affects the signal,I actually don't know. I bet it's complicated though. Wink, wink.
12-18-14: Geoffkait
Geoffkait, Thanks for the response.
directionality of a metal conductor is produced by the orientation of the crystal structure as it is pulled through the final die.
That's what the likes of Bill Lowe of Audioquest and the late Bob Crump preached for years. There are countless others in the same camp as you know that preach the same theory. And until someone comes up with a better explanation that's good enough for me. Here is a post of the late Bob Crump's.
◾Re: maybe rcrump... I don't know, but... rcrump 06:45:41 09/30/00 (11)
In Reply to: Re: maybe rcrump... I don't know, but... posted by Greg R. on September 29, 2000 at 19:47:48:
Solid core wire is extremely directional so just mark the end with some masking tape as it comes off the spool. Orient the wires so you have piece of masking tape at either end and terminate the wires. Throw it on a MOBIE or whatever overnight and then listen to it noting which way gives the highest image height. This is the correct orientation.
If you run the signal and return wires in the same direction you will end up with hot spots in the stage, normally at or close to the speakers, low image height and have a gaping hole in the middle of the stage...Keep in mind I am referring to the sound of the stage (reflections) not the individual instruments spread across the stage....Interconnects or speaker wires that have pianos wandering all over the stage normally have their signal and return going in the same direction....
Here is another post of Bob's from the same thread.
◾Re: Is stranded core directional also? rcrump 03:59:51 10/02/00 (2)
In Reply to: Re: Is stranded core directional also? posted by steve b on October 01, 2000 at 18:05:36:
Steve, I don't want to speculate why wire is directional, but it is as poor Greg has found in a later post....I spent about three months playing with such things before I released my commercial interconnects and speaker wire and went about as crazy as Greg is going right now and can't tell you how much wire I trashed as I forgot to mark it with some masking take as I took it off the spool....Directionality in wire will be measured some day as it appears to be an FM distortion and wandering pianos (small phase changes with frequency) will be a thing of the past. Until then use your ears to discern directionality of wire. Stranded wire likely suffers from a lack of focus compared to solid core as some of the strands go one way and some the other, but this is pure speculation on my part.....Just enjoy the ride!
http://www.audioasylum.com/cgi/t.mpl?f=cables&m=12332 >>>>>>>>>>>>> I also do not happen to think the dielectric material affects the velocity of the signal. As I already said I think the velocity of the signal is fixed (constant) for a given medium, I.e., copper or whatever.
12-18-14: Geoffkait
How do you explain the audible differences when flipping cables made from solid core silver conductors? Surely you have experimented and have heard the differences. . |
The revelation that digital interconnects and their direction can introduce large differences in measured jitter was quite a shock. The differences heard between digital interconnects—and in their directionality—have now been substantiated by measurement
. >http://www.stereophile.com/content/transport-delight-cd-transport-jitter-page-9
The Why? Who cares.... The point is, there was a difference. A measurable difference. . |
