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Lost all respect for Doug Self
- Thread starter audio2design
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Once more, do you have any measurements?
In audio applications how does this matter? Are you a cable "designer"?
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audio2design
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Don't get me wrong I think cable direction as an audible effect is silly. Does not make cables not directional. Only makes them audibly not directional.
The only exception is shields and how connected in very specific circumstance as I described above.
The only exception is shields and how connected in very specific circumstance as I described above.
Just because relativity becomes noticeable near the speed of light doesn't invalidate Newtonian mechanics at lower speeds. And yes, I still respect Newton.
Being that Doug is an electronics engineer and author of several books on audio electronics, then perhaps take what he said in the context of audio.
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Raindog123
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I am done with @audio2design, but for everyone else interested, the Reciprocity Principle is a fundamental physics principle applicable to electromagnetic systems of any complexity, including our 'electrical circuit networks' (cables). As long as they are (a) passive and (b) linear (in the microscopic field sense). The systems do NOT have to be symmetric (you can hang the capacitors/inductors/resistors on one side all you want). That's all the point, otherwise it would be trivial. 
And one of 'interesting' aspects of the reciprocity principle is that an electromagnetic system's behavior remains the same, if we reverse the direction/flow of time...
And one of 'interesting' aspects of the reciprocity principle is that an electromagnetic system's behavior remains the same, if we reverse the direction/flow of time...
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Oh I think Doug is well above the grade of audio engineer, how many of them can design an amp?
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No one here is an arbiter of the truth. No one anywhere else is an arbiter of the truth, either. Truth exists, and it exists without our arbitration. To think otherwise is the greatest of hubris.
Besides, there's the matter of efficacy and relative importance. There are no straight lines on the quantum level, but try to impress that on a police officer who asks you to walk a straight line at a "drunk stop".
I think I'll go and reverse one side of a pair of stereo interconnects.
Uh oh.
Now I'm stuck.
How will I know it wasn't already reversed?
Uh oh.
Now I'm stuck.
How will I know it wasn't already reversed?
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audio2design
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I am done with @audio2design, but for everyone else interested, the Reciprocity Principle is a fundamental physics principle applicable to electromagnetic systems of any complexity, including our 'electrical circuit networks' (cables). As soon as they are (a) passive and (b) linear (in the microscopic sense). The systems do NOT have to be symmetric (you can hang all the capacitors/inductors/resistors at one side all you want). That's all the point, otherwise it would be trivial.
And one of 'interesting' aspects of the reciprocity principle is that an electromagnetic system's behavior remains the same, if we reverse the direction/flow of time...
Your continued misapplication of things you clearly do not understand well does not make it right. An RC filter is a simple network, but the operation in a practical sense is not the same in both directions and reciprocity does not say it would be. A cable is at the microscopic level a bunch of simple networks in series. You can place any of those networks in any series and the transfer function is the same. That does not mean they transfer function is the same in both directions of real circuits.
Don't do it, you'll null the pair.
My pair has already been nulled by this thread.
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audio2design
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Now do superposition for power ....
Raindog123
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Ok. I'll use this argument, for a bit. and then I'll delete it...
...gone. And funny thing, while I do understand a few things, I am wrong all the time.
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This was the most entertaining utterly useless thread I've read on ASR so far. Thank goodness it was so short. Engineering theories I'd never encountered and some interesting use of language: arbitrars, proselytize, pedantic. And what was the point? To insult some guy named Doug?
@audio2design, quit wasting our time. You already acknowledge that any differences caused by your "academic" theory of cable "directionality" are NOT audible. I think it's pretty clear that Doug Self (and others on this forum) are correct that from a practical standpoint and from an application standpoint, audio cables are not directional because reversing direction does not result in an audible difference.
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Almost made this exact point. It's the analogy that first popped into my head.
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