I was very clear my question was DC (no dI/dt). Anyone can look it up #10 wire is almost exactly 1 mOhm per ft. so 10' is 10mV at an amp no room for any dI/dt. I believe in starting simple, I see no one was up for any measurement. I'm not equipped to do measurements at 100kHz, certainly not to your standards.
Perhaps your intend was clear to you, and you are indeed correct at DC.
A #10 twisted pair at 10 kHz has significant proximity effect, but the endpoint resistive change would not be easily measured, even with the stuff I have access to. With a speaker load, no possible effect could be measured.
Badly oxidized/greenified...not so sure, test and/or audibility. Me, I'd test.
Jn
Personally I would put greenified in the pathalogical box.
Note I've probably been using the same speaker cables as long as anyone else on here, so I probably count as a audio slob.
Note I've probably been using the same speaker cables as long as anyone else on here, so I probably count as a audio slob.
Not when you read his later comment, saying that he was not listening while changing HV.
John Curl's Blowtorch preamplifier part IV
However we came into an interesting technical dicussion.
Hans
Bill, you still runnin those knob and tube Edison speaker wires? 😀
Oh ya, green monster cable......no bueno! 😛
Oh ya, green monster cable......no bueno! 😛
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Agreed on both counts.
His first mention it appeared to me he was the one to hear it, then it did morph to the other guy heard it. But no worries.
Jn
I'd have to import them as we never used that in uk, but my speaker cables are from the last century.
@JN: Eagles can't hunt octopus.
YouTube
Frankly I would too. I will also remind folks that ADSL worked over an infrastructure that was at times almost 100yr. old and exposed to the elements the whole time, it was several MHZ in BW and very sensitive to IMD. Alcatel was disappointed when we told them they could not use cheap Hi-K ceramic capacitors for POTS isolation.
I wonder who just didn't let go a few posts up https://www.diyaudio.com/forums/the...lowtorch-preamplifier-iv-268.html#post6085725 ?
Bald eagles prefer fresh fish, BTW.
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Scott: My ADSL is barely working this evening! But given how far I am from the exchange it's a miracle it ever works. Krone strips are the work of a demonic force.
But solid core Cu or Al is remarkably resiliant all things considered. When I was in my early teens we were given a talk at school by a Professor Lew Schnurr who explained why 1200 baud was the maximum you could ever get down a phone line. Sadly never met him again to remind him of this minor error in his thinking.
But solid core Cu or Al is remarkably resiliant all things considered. When I was in my early teens we were given a talk at school by a Professor Lew Schnurr who explained why 1200 baud was the maximum you could ever get down a phone line. Sadly never met him again to remind him of this minor error in his thinking.
There have been many extraordinary audibility claims posted without extraordinary evidence, not just by Richard but others as well. "Not to accept or refute his claim"? How can there be an engagement of a technical discussion when one does not accept or refute a claim? For such person, he/she can only moderate such discussion but not engage it. Doesn't make much sense.
The ignore list claim has been bandied around so much that it's losing the seriousness of it.
As for being at the receiving end of it, does it make you feel let down, punished or anything negative?
Think that sentence through. If I refute the claim, there is no reason to engage a technical discussion. If I chose to engage in a technical discussion of what I do not believe, that will certainly tailor my thinking.
The same if I accept, my thinking will be tailored toward that.
I would rather approach the technical discussion with no preconceived notions.
Jn
Wasnt clear to me either. so no comment on it. But why even bring Dc into it when the discussion was oxide and its effects... strand to strand.
pathological isnt the point... most all copper wires will oxidize in good time. How long will also depend on the insulation material.
If 2 wires, strands or not, are oxidized and are in contact..... then what? That is what we were talking about. Well, at least I was.
So was the conclusion that it cant matter? Compared to the unoxidized path? Not even at 10KHz and above?
I'm slow this morning.
THx-RNMarsh
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I tthink you have me confused with someone else. What extraordinary claim are you attributing to me?
THx-RNMarsh
I used this when I worked as video tape recording product engineer around 1999.
I make the assumption no minds were changed.
I did calculate the maximum energy that could be compromised, it being the energy stored in about half the wire pair inductance. About 100 nH per foot.
Jn
It wouldn't be a no preconceived notion case unless you are completely new to sound reproducing electronics. Since you are not (correct me if I'm wrong), you deliberately consider yourself as completely new to this and engage in technical discussion. The essence of my earlier question was, why do you do that?
Another case of willful ignorance.
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