John Curl's Blowtorch preamplifier

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#3,421
janneman said:


You really have a knack for picking the wrong analogies. Fire is obvious because you can see it, smell it. If you take a friend to show it, he sees it, smells it, burn your hand if you touch it. That's acceptable proof to most people I would think; it is for me.
The audio phenomena you mentioned are not proven to the same extend as the fire is proven. They are not proven at all. And when people do a serious effort to try to proof that, objectively, there are these 'phenomena', they find no evidence.

[snip]Am I to take it that you've never read Picking Capacitors by Jung and Marsh? Never even heard of it? It was published in Audio magazine back in, I think, 1977. They used to have it online at www.capacitors.com. [snip]Grey


Don't be silly. I read it before it was published.
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As the advertisement went..."It doesn't get any better than this!"
You said precisely what I predicted you'd say--even went so far as to very kindly include my prediction in your post--and yet completely missed it.
How on earth would you know if something was obvious? You can't be bothered to try. You're too busy letting others tell you what you're allowed to hear...or not, as the case may be.
Which, I suppose, means we might as well confront the elephant in the room.
It never ceases to amaze me that we live in a world where people accept that Jordan can play basketball better than they can, that Andretti can drive a car better than they can, that Einstein can do math better than they can; that any given field has people who are better, people who are average, and people who are not so good. But when it comes to audio, we bump into this marvelously egalitarian notion that everyone's hearing is precisely the same. Only, it ain't so, is it?
From other posts of yours, I gather you feel that your hearing is above average. I have no quarrel with that. Let's stipulate that it is true. But why, then, do you allow others to tell you what you can't hear? You spend so much time saying "My mamma didn't raise no fool!" and telling us that you aren't going to be taken in by all this weak-minded twaddle promoted by "snake oil" salesmen, that you have completely walled yourself in. Nothing passes your defenses unless it's been vetted and approved by all the best authorities. The problem being that, by definition, on average, their hearing will be just that...average. Yet yours is above average and you might hear things they don't hear.
By letting the flappers rule your kingdom, you'll never know what is obvious and what is not.
And what are we to make of this:
In your post #3386, you demanded to know where it had been proven that passive parts make a difference, thusly, "What has been proven, then? Where is it documented?"
But now you claim familiarity with the paper and go so far as to say that you read it before it was even published.
Now, there's a big "Ooops!"
So here we find you in an even worse bind than before. You're denying something that was proven thirty years ago. Surely it can't be so. Surely you haven't thrown up such high walls that you won't allow things in that have been proven.
Very sad. Very, very sad.
It appears that you're arguing just for the sake of arguing, and that's a waste of time. This isn't worth continuing.

Grey
 
#3,422
IIRC, that paper did not demonstrate audibility of so-called capacitor defects. It just presented measurements.

The difference between Andretti and the Golden Ear crowd is that Andretti actually gets around the track faster. He doesn't need to convince people that, really, he could get around the track faster, and that all those losses and ties were because of race pressure.
 
#3,424
GRollins said:

But when it comes to audio, we bump into this marvelously egalitarian notion that everyone's hearing is precisely the same. Only, it ain't so, is it?
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And why would I care if you (or Jan as a matter of fact) have a better hearing than mine and 99.999% of the population on this planet? That would not help, entertain or provide me with any kind of positive experience. Au contraire, I would say I may feel for you; it's certainly very expensive to make you, audio/sound wise, happy. You probably have to pay $279 for a Black Gate 2200uF/100V electrolytic or $13.50 for a foot of Mundorf White Teflon (PTFE) Silver/Gold Hook-Up Wire, 1.0mm/18 awg to get a positive sound experience.

If, based on your incredible listening abilities, you are looking for some sort of recognition, praise or credibility then I am afraid the simple fact of belonging to that 0.001% percentage minority won't help per se. I personally (and I guess many other) prefer to trust and rely on work and recognized education rather than something that mostly qualifies either a random act of God or as a diploma for education in an unaccredited university.
 
#3,425
syn08 said:


And why would I care if you (or Jan as a matter of fact) have a better hearing than mine and 99.999% of the population on this planet? That would not help, entertain or provide me with any kind of positive experience. Au contraire, I would say I may feel for you; it's certainly very expensive to make you, audio/sound wise, happy. You probably have to pay $279 for a Black Gate 2200uF/100V electrolytic or $13.50 for a foot of Mundorf White Teflon (PTFE) Silver/Gold Hook-Up Wire, 1.0mm/18 awg to get a positive sound experience.

If, based on your incredible listening abilities, you are looking for some sort of recognition, praise or credibility then I am afraid the simple fact of belonging to that 0.001% percentage minority won't help per se. I personally (and I guess many other) prefer to trust and rely on work and recognized education rather than something that mostly qualifies either a random act of God or as a diploma for education in an unaccredited university.
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Isn't it the point of this forum?
To seek solutions to that which is so illusive?
Else, why not settle for the $99.00 Mass-fi all-in-one?
 
#3,426
I was hoping that this THREAD on this forum could be used to discuss 'fine points' of audio design, whether 'proven' or 'unproven' by the engineering community. Could we not put that into consideration, when posting on this one thread? I can't teach elementary principles well, and I have elected not to do so, but many here don't seem to realize that their easy questions, such as 'what is popcorn noise' can be answered with a 'Google' search, better than I or most of us can explain here. It is faster and easier to do it and it saves us more time and space for discussing more important issues, such as the difference between Teflon and polypropylene caps, (if any) for audio and which to use.
 
#3,431
courage said:
John,

I completely agree.

Have always wondered why people like Grey deliberately choose to waste this forum's bandwidth with boringly long off topic answers in which he tries to explain his personal conflicts with some posters to himself.
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I thaught it was only me.....grey's style reminds me of pleadings done by lawyers in the court of law....reading his long posts give me headaches..


:hot:
 
#3,433
John Curl

important issues, such as the difference between Teflon and polypropylene caps, (if any) for audio and which to use.
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Look at dielectric constant, dipole electron spin reorientation thresholds and the time event between D Field and E Field, to find coloration. I make use of these, along with a dielectric circuit, enforced by these considerations, in "voicing" OPT's for electrical, musical instrument amplifiers.

Bud
 
#3,437
I am 'adored', because I do good work, and have done so for the last 40 years. For many here, the very idea that there is any differences in audio design, appears to many here as a absurdity. I do not know why people who do not think any differences are real, continue to contribute on an audio website.
It really confuses me, and I asked some of my associates to sample this website recently and give me their opinion. They think that i should not bother to convince anyone of anything, and they are probably right. These people included Dick Sequerra, Jack Bybee, and my layout partner, Carl Thompson. I also had long telephone conversations with Walt Jung, Charles Hansen and Chuck Hansen about these matters and while I no problem discussing these things with them, I can't get a word in about our conversations on this website without all sorts of insults and insinuations thrown at me. I hope to refrain from giving much here outside of a narrow range of understanding, in order to keep the peace and not get removed myself, for obvious reasons.
 
#3,438
Hi John,


As you probably have noticed here by now there are those who will take opportunity to take a stab at many folks here, especially someone with the credibility and hard yards experience such as yourself, many whom believe that PSpice tells everything and those folks who claim there is a world beyond a screen and listening counts to must be nuts category. There are some"who may remain nameless" whom have a reputation for ego battles and have a hard time perhaps learning from someone with hard yards, hands on experience, in the end though it boils down to ego, but I must say as a hobbyist DIY and a musician I have heard many differences boiling right down even to parts choices and have come to gather a great respect for the designers whom incorporate all facets including the psychoacoustical evaluations into the designs, it all counts!, and while limited I have had a good chunk of first hand experience at hearing these differences. Subtracting a few needless head bumping, I enjoy the thread immensely. Never hurts to be adored, but of course it never will come without some envy.


Colin
 
#3,439
15 years ago i figured the audio art was heading up dodo alley.
It's pleasant to witness so much living passion for this quaint interest, unfortunate to see it siderail so often from rigid round the bend stuff because of it.

This beaut of a web thing is so much more valuable than chasing papers and an occasional geographically restricted audio meet.
I corner better than Ayrton Senna, not as fast but safer and on top of it i can decide for myself which way i'm heading.
 
#3,440
john curl said:
Grey is completely OK, in my book. Look beyond him, and understand my concern.
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John,

Grey in his latest post 'accused' me of thinking my hearing is better then others, that I am a golden ear. That hurts, because if there is anything I have NEVER claimed it is that.
How can you have confidence in anyone who apparently is not above fabricating arguments out of thin air?

You are of course free to chose your associates, but then must be prepared to be judged by that as well.

Jan Didden
 
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