Every piece of mystery audio gear that is.
I don't remember stating discomfort or disbelief. Somehow, someone's curiosity on possible sound improvement is way out of their experience/comfort zone to you.
I see them everyday online.
Not a hard one. Carefully cal the network analyzer for S11 and S22. Connect a cable between the test ports. See if there is any difference between the two traces.
This won't let you measure really tiny deviations in the structural return loss, but it certainly would allow you to see if there's a significant difference on that cable. Note that with a relatively short cable you'll need to look out to at least several hundred MHz because of the wavelengths involved.
Plan B is to use a TDR.
Again, I can't say with any certainty that this cable effect would have any effect on audio circuitry and how it performs.
However, don't rely on anything I might say:
Variations of characteristic impedance along short coaxial cables - IET Journals & Magazine
https://www.keysight.com/upload/cmc_upload/All/E206COMPTEST_METHOD.pdf
Structural Return Loss Measurement of Coaxial Cable
Dan loves to maintain the aura of mystery. His research so far is need to know only, highly confidential hush hush stuff. Hold your horses, it won't get you anywhere anytime soon.
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OR are you referring to NEXT and FEXT? Near-End cross Talk and Far-End cross Talk??
I can see this making a difference esp on long cable runs.
-RNM
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Well... I guess that depends on how whatever the impedance presented to the output stage affects that stage's performance.Sort of what I was alluding to in my earlier post. But, these effects are IMV not measurable at Audio so are not hearable.
(I've just donned my fire suit.
As an extreme example, which nobody here would ever encounter, if the output stage is marginally stable the reactance connected to the output terminals could have a big effect on the stage performance.
Or, imagine that some external RF source gets into the amplifier through one of the many ports and causes distortion or is even rectified. That wouldn't show up in the usual audio band measurements. The cable characteristics certainly would have an affect on this, too.
Yes I like it, as a different view at the same issue that I addressed as well. However, unfortunately, the own experience is always untransferrable.
Connectors and shield connection is the main source of added shield interference voltage. Not the cable itself. However, audio designers do not care, in 99%. Probably they have no idea and do not understand the issue. If it was not true, the evident design faults would not be a rule of thumb in audio design.
Back on track, are we evenharmonics? It doesn't matter much what Max or anyone else uses, you will not be able to match what Max does to them, because it is confidential what he does. Apparently he would like to develop a service from improving electronics. Very commendable in my opinion. My colleague, Jack Bybee does much the same thing. It has been very useful to me for the last 25 years.
No, this concept is beond logic and shows how far down the rabbit hole youve gone. Same special sauce fixes everything audio but has no effect on other electronics and the only proof is your opinion, and dont tell us "everyone" else hears the improvement because im sure the old man in the back row didn't. And for all we know no one did but that dosnt sell your BS.
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Back on track but one more on Max before we do...
Of course not, as long as the model and brand of them are kept secret.
Right, apparently I can develop improvement in electronics beyond audible level and market it. It would be commendable for my wallet too.
Chris, there is a difference between jfets and bipolars, but I invented both complementary differential input stages, separated by a 4-5 year interval. So, in 1968, I used bipolars for my amp input stage, and later I used complementary jfets for the GD, and ultimately for the Levinson JC-2 line stage. See schematic.
Of course, the self biasing nature of the depletion mode jfets gave some advantages, but the bipolar and mos fet devices will also work in a complementary differential input stage.
Of course, the self biasing nature of the depletion mode jfets gave some advantages, but the bipolar and mos fet devices will also work in a complementary differential input stage.
Who said DC and high source impedance? A coil of wire has an open circuit voltage noise and short circuit current noise both very small and difficult to measure. Consider for a minute the profound consequences of conductor asymmetry and its own noise. Is this idea all your own or do you have some references, it took a while last time to pry them out.
So; radar, mobile telephony (64 QAM for 50 mbps on 5Ghz), LHC... they all don't have time as a challenge... sure.
... hmm
//
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