John Curl's Blowtorch preamplifier part II - Page 3468 - diyAudio
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Old 10th February 2013, 09:15 AM   #34671
marce is offline marce  United Kingdom
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They may be available to all, but I have never seen them used anywhere but esoteric audio, on any electronic project i have ever worked on, and I have never seen them in any parts catalogues, including specialist ones related to noise suppresion and EMC based products, only audio.
Now my theory on this is that on real world designs such as a sonar array, which are tested and measured to the extreme is a competant engineer isn't gonna use a part that has all the features of a low value resistor, they dont seem to believe in magic as much as some enticed by the world of high end esoteric audiophillia...
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Old 10th February 2013, 09:16 AM   #34672
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Quote:
Originally Posted by john curl View Post
Another example of JC-3 position in marketplace:
JC, I was discussing the circuit you posted as phono.pdf

It has JC2 on the drawing. Are you telling us that JC3 has the same circuit as the evil phono.pdf?

We can't comment on JC3 as we have no info except for some splendid marketing efforts from your good self.

But if you post the up to date circuit for JC3, we'll be happy to check it out for you.
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Quote:
... jest of it is: Asymmetrical waveforms appear both in nature and in .....
Gasp! You mean you MEAN ... signals are ASYMMETRICAL?

None of us could possibly have suspected this!

But all our circuits have been designed to ONLY accept symmetrical signals! How could we have been so stupid!

I blame Mike Faraday, Nyquist, Fourier, Obama ...

To Mr. F : Mea culpa, mea culpa, mea MAXIMA culpa ... for dis asymmetrical bit.

Last edited by kgrlee; 10th February 2013 at 09:46 AM.
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Old 10th February 2013, 09:43 AM   #34673
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Quote:
Originally Posted by kgrlee View Post
And of course there are the true 'Elite' like JC who don't even have to listen to a product to tell you what it sounds like. They can do it by simply looking at the price tag and the labels on the evil OPAs.
Quote:
Originally Posted by Robert F View Post
Must you continually beset us with this leaden sarcasm in nearly every post. My god it's annoying.
Mr. F, I think you'll find that post is completely factual .. including the statement you label as sarcasm.

If anything these days, JC seems to ignore the price tag and base his opinion solely on the label on the OPAs. To confirm this, you may like to review his prodigious (and often sarcastic) comments on 4558, 5532/4, AD797 etc on this thread.

Last edited by kgrlee; 10th February 2013 at 09:48 AM.
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Old 10th February 2013, 10:13 AM   #34674
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Marce, I don't answer all your questions, because I don't work for Bybee, so I don't know all the answers, but I do know that Jack has contacted Cisco Systems and had so positive results, years ago.
For everyone else, I don't work directly with Jack Bybee, I have only been to his house/workshop once in the last 17 years. He is more than 1 hour away, and I can't drive that far, these days, due to my poor eyesight.
I would recommend that you just ignore Jack Bybee's products, unless you have one of the finest audio playback systems already, and want to improve it a bit more.
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Old 10th February 2013, 10:31 AM   #34675
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I am sorry, everyone that kgrlee thinks that he is being factual, but apparently he has limited resources and sort of has it in for me.
The schematic that I posted that my colleague Carl Thompsen, you know the T in CTC, drew up on the computer, years ago, was an early version of the JC-3. However at the time, it was supposed to be an added feature to the JC-2. Carl named the schematic, but when I see the schematic, I see the first schematic of the JC-3. It is close enough for discussion AND it can sound pretty darn good, if I say so, myself. Audio critics seem to agree as well, but it is NOT as good as the original Vendetta Research SCP2 phono stage, originally built by Carl and ME, you know the [CT] of CTC more than 20 years ago. It is my first recent effort to make an IC based design of very high quality.
Of course, changes to the schematic have been made, but I am not going to reveal them to you, as I don't like to release complete schematics here. This original schematic was tested by ME, and ME alone, and revisions were done, mostly to the case material that was steel, originally. The other changes would be irrelevant to the vast majority of you.
What is amazing is that I gave up a schematic, and all I get is criticism. What do you guys want, anyway? I was nagged for years for schematics, and I have no constructive feedback on the relatively numerous schematics I published in the past few months. Seems that you really don't want or need the info. I will keep that in mind, in future.
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Old 10th February 2013, 10:58 AM   #34676
SY is offline SY  United States
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Quote:
Originally Posted by Max Headroom View Post
So where's the screw up ?.
You did the vaguely described "experiments", so you're the one who has to answer that.
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Old 10th February 2013, 11:03 AM   #34677
SY is offline SY  United States
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Quote:
Originally Posted by john curl View Post
...I do know that Jack has contacted Cisco Systems and had...
...a restraining order taken out against him? His ads sent around the engineering department as a joke? Inquiring minds want to know!

Before you dig yourself deeper with this story, this is one I can easily check out, since one of the founders and their technical guru is an old friend of mine who used to work for me.
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Old 10th February 2013, 11:16 AM   #34678
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Quote:
Originally Posted by Max Headroom View Post
As I understand it, the submarine guys
I don't want to be disagreeable, but NO scientist will never print or allow to print such crazy things you can read on the "Bybee technology" site under its name (Bybee). So, i ask the question again:

Any evidence this Mr. Bybee had sell anything to the U.S. navy, or such fake devices had been used in submarines ?
Any evidence this Mr.Bybee had a degree in something else than mythomania or fraud ?

Are-we going to talk during months about a out-priced fraudulent gadget witch do NOTHING and is pure snake oil ?
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Last edited by Esperado; 10th February 2013 at 11:27 AM.
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Old 10th February 2013, 11:23 AM   #34679
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Quote:
Originally Posted by kgrlee View Post
JC, how about you tell us in YOUR own words what happened to the circuit you posted as phono.pdf and who criticised it and what did they say.

Are you telling us now that it wasn't criticised and it received rave reviews?

Once we've sorted out historical issues, we can embark on the technica l review of phono.pdf and Blowtorch.
_____________

Apart from demonstrating JC's ignorance of Fourier & other basic matters, I'm not sure what the argument about DC is about. Is the Bybee device meant to reduce these evil effects?

Or is it just another smoke screen to obfuscate matters?
_____________

JC, are you claiming that Blowtorch and your other designs have the same technical and aural merit as Mr. Bybee's devices?

If so, I think many of your detractors will melt away ..

Max, can you tell us who this august personage is?

BTW, the test JC describes and you quote is called THD testing.
I don't know how others feel about this, but I am fed up with this style of communication. It does not add any further understanding to the field.

Johns designs measure very well, besides being euphonic according to golden ears. What is your point in stating things like "Blowtorch and your other designs have the same technical and aural merit as Mr. Bybee's devices?" This is obviously untrue since John's design are technically sound. The only reason I can think of why you would post anything like this is some kind of frustration you need an outlet for.
So, what is your claim to fame?

Last edited by vacuphile; 10th February 2013 at 11:41 AM.
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Old 10th February 2013, 11:44 AM   #34680
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Agreed.

I have been following this thread for years and comment very little, since I have very little to add, constructively. But I do try and glean information from the "debate".

JC does himself no favours (British "u"!) with his blunt provocative style and stubbornness, but I also find kgrlee's open dismissive aggression really offensive, and I stop listening to his message.

Is there an "alert moderator" button somewhere, or is that in another place?

Cliff
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