John Curl's Blowtorch preamplifier part III

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the signal flows through connectors, copper and silver wires, copper/lead?/tin on circuit boards, passive and semiconductor parts, but it is the silver wire than makes the audio music softer sounding = how can that be Dr. Einstein?
Your infatuation with silver wire and teflon boards is remarkable, cheers to you.
I do ask, what else was "was lost in the firestorm of '91", some common sense maybe? :)

Lemme try: "Change one part, all else being equal"
 
Problems ? How a recording problem could happens in studio ? if, for some reasons, a problem happens, we redo. Immediately.
And the work in progress is listened so many times, by so many people that I don't see how could a technical mistake could survive.

I hear edits that I don´t like. Cymbal tails are very unforgiving towards the less careful engineers.

I disliked this vocal edit. It is an artistic flaw, not a technical one, but it's a flaw nonetheless. At the 1:20 mark.
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I always love how these valve amps have mains IM on every input signal at 30dB over the noise floor.

Probably AC powered heaters I am assuming and the use of EI cores that are really bad wrt EM radiation. The tube guys seem to be able to tolerate very high hum levels and still enjoy the sound :D (although my opera loving neighbor, who I discovered is also a Hifi nut, won’t have tube gear because he says it hums)

I use a small 1.5 VA potted EI as a standby PSU and got an annoying hum (-90 dB on the QA401). I had to reroute some of the wiring to get rid of it.
 
Rsvas, I am world famous, I don't need your version of 'common sense'.

Yes you are, but it does not mean that you are necessarily right. You are famous in a fashion business, High End audio is a fashion business and it has similar audience as magicians show. It is very far from science, scientific approach. However, it is your choice. Maybe you just would not need to boast on every possible occasion.
 
The tube guys seem to be able to tolerate very high hum levels and still enjoy the sound :D

You can certainly solve the hum issues...
Many of Michael Fremer's vinyl rips sound amazing in my system and he probably used tube gear in all these videos (see the channel Analog Planet on youtube).
I believe his MC amp uses a step up transformer though. In one of the videos he mentioned using this TEA-8695PCS Phono Equalizer Amplifier
 
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I always love how these valve amps have mains IM on every input signal at 30dB over the noise floor.

Whenever I feel like a scare, I look at the wiring, especially the grounding, of my tube gears. Some of them are famous brands, others I built myself, most have P2P wiring, and all of them are a horrifying MESS!

I still prefer these over any solid state gears I have, or have been loan.
 
The silver cable DID get better over years of use. ... Break-in was mandatory with our silver wire that we used. I wish I could buy some more. ...
Change of electrical properties could be related to change in microstructure of the conductor wire over time and usage. I would be astonished if the change is not measurable. I'd like to have some of the great wire too, but the current OFC wire and OCC silver wire are really good enough, hard to find any application that needs a sizable quantity of better wire to finance more detail studies.
 
... It is very far from science, scientific approach...

You're probably right, if you stay within the common (restrictive) definition of "science": "a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe"

But sometimes, in order to advance the current state of the practice, we have to move beyond the known boundaries. Then maybe we can call it "philosophy", as in PhD. A high school teacher I had once called it "the sum of all sciences".
 
Change of electrical properties could be related to change in microstructure of the conductor wire over time and usage. I would be astonished if the change is not measurable. I'd like to have some of the great wire too, but the current OFC wire and OCC silver wire are really good enough, hard to find any application that needs a sizable quantity of better wire to finance more detail studies.
Good one. I would be astonished if there wasn't a measurable change in his hearing over the years
 
We have been studying the effects of wire in audio for more than 40 years. I can still hear differences between them, as can many professional reviewers. I stand by my experience.
John, you have an interesting discovery. So there is a still unexplained phenomenon that would make the material itself of an electrical conductor affect the signals it transmits, without any of the ways of measurement at our disposal can measure the causes and the effects?
The silver cable DID get better over years of use.
... And that, apart the phenomena of oxidation that can change its conductivity, the simple fact that an electrical conductor is submitted to a current flow produce a change in its physical structure, witch is proportional to the time it is exposed to this flow ?
 
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Yes, I’d say Tin Tin is more famous than JC. Famous all over Europe and lots of other places but it seems not in the USA.

I still page through the Tin Tin books and I am supposed to be an adult :D

You can certainly solve the hum issues...
Many of Michael Fremer's vinyl rips sound amazing in my system and he probably used tube gear in all these videos (see the channel Analog Planet on youtube).
I believe his MC amp uses a step up transformer though. In one of the videos he mentioned using this TEA-8695PCS Phono Equalizer Amplifier

I agree - it’s all in the execution.
 
I hear edits that I don´t like. Cymbal tails are very unforgiving towards the less careful engineers.

I disliked this vocal edit. It is an artistic flaw, not a technical one, but it's a flaw nonetheless. At the 1:20 mark.
YouTube
Several remarks on this tune.

The overall response curve was over-corrected with added highs. This will sound better on systems of average quality, painful on systems favoring this band of frequencies. A commercial choice, not artistic. It is also possible that the monitors used during the mixing lacked treble ?

At 1.20, we actually notice a sudden increase in the low-mid level on his voice. Did she approach the microphone? Or is it a potentiometer move a bit too brutal ?
Not very bad, though ?

Here the digital version: YouTube

Those youtube recordings are perfect to enlighten the differences between Digital and analog.

The drums, like the "bump" guitar are smoothly mashed in the space on the vinyl. Less relief. The instruments are wider, less precise.
It is obvious that the increase of the treeble has been added by the vinyl mastering engineer: it is softer on the digital version.

Strangely, on the digital version, I'm less annoyed at 1:20. A difference in the response curve that is never flat on vinyls ?

I noticed, too, that the tails of the voice's reverberation are longer and smoother in the vinyl version. Vinyl drags or lack of digital ?
As I have never seen such a phenomenon in the studios with digital copies of a master mix, I tend to look for the first hypothesis.

Over all, and apart the little annoyance of the treebles, I tend to prefer the vinyl rendering on this specific tune. Smoother, silkier. >But ... less faithful. Vinyl can bring a plus. But it's a contribution.

I thought that Pif et Hercule were the most famous in France, but i'd really like to know the truth.
Not at all. Tintin is an institution. Published both in the Tintin magazine and in luxurious albums.

Pif and Hercule were characters of a cartoon printed in the newspaper "L'Humanité" published by the communist party. That had a limited audience at this time (cold war: 20% ) and near no audience today (Berlin wall: 4,3 %).
 
John, you have an interesting discovery. So there is a still unexplained phenomenon that would make the material itself of an electrical conductor affect the signals it transmits, without any of the ways of measurement at our disposal can measure the causes and the effects?
Seems JC still does not have enough interest to find relevant measurement, perhaps you will have better luck asking PMA, simon7000 or KSTR.
... And that, apart the phenomena of oxidation that can change its conductivity, the simple fact that an electrical conductor is submitted to a current flow produce a change in its physical structure, witch is proportional to the time it is exposed to this flow ?
A cold drawn copper conductor change its tensile strength and conductivity over time while a properly annealed one will exhibit less of a change. I have seen no study with relevant electrical properties measurement on effect of current flow, EM field, thermal cycling, grain size, fatigue, break in procedure or others in wires.
 
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