John Curl's Blowtorch preamplifier part III

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#31,661
Jakob2 said:
Your claim was about "snake oil" and "business pitch" in my posts at the hydrogenaud.io forum.
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If you are quoting my words, make sure you really quote it because if you don't, you are violating forum rule. I replied to mmerrill99 "Oh, that "research". Why should anyone fall for snake oil sales pitch that Jakob(x) tried over at Hydrogenaudio and already got exposed for what it is?"
And you failed to provide evidence for "snake oil" or any "business pitch" in my posts on hydrogenaud.io .

Instead you posted content about what other members imaginations. Don't you know the difference between real evidence and the usual banter when people are running out of arguments?

To refresh my example from the last time; if I would claiming that "Evenharmonics is lying on diyaudio" and after being asked for evidence, I simply would quote the opinion of other members that "Evenharmonics is lying on diyaudio", should that count as evidence for the fact of "Evenharmonics is lying on diyaudio" ?
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Your problem is the lacking sufficient understanding of words written, either intentionally or due to language barrier.

You, an audio businessman and others alike (jkeny) have been trying hard for years to discredit the value of DBT because the results of such test would "undercut the foundations of high-end belief systems that support your livelihoods." as pointed out by krabapple on Hydrogenaudio forum. Snake oil being the high-end belief systems as evidenced by DBT over the years, your attempts at sales pitch for such business is and has been clear as a bell.
 
#31,662
Except as gpauk pointed out there is very little reality in most recordings, so I think accuracy is a better aim, then the reproductions should turn out correct across the board. Richard's method is the only one, so far, that attempts to compare reality with reproduction. Of course better is still better and subjective 🙂
 
#31,664
mountainman bob said:
It seems a lot of people are ok with ‘good enough’ when there is so much better to be had with a little effort. Nothing wrong with vanilla I suppose but it seems as though the people that strive for/prefer ‘better’ are labeled as audiophiles and dismissed as fools!
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Maybe, but that's not generally true in here...
And do not confuse your "better" with my "better". Both are subjective, there is no absolute answer. You and I both want better - but I doubt we'd agree what that is, even if we found music in common. Neither is vanilla.
 
#31,666
mountainman bob said:
I feel everyone shares in the same reality....whether you like it or not is up to the individual. this (like it or not)might be where denial enters the picture and interpretations get distorted to fit personal needs.
now if you want to start getting into Schroeder cats and trees falling in the woods, etc .....then reality goes to a different level.

just how I see it......the taste for accurate sound cannot be a lot different than reality......and reality really shouldn't have too many definitions. 😉
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I was not aware, Shroeder has cats.
Peanuts.
 
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#31,667
Gpauk, That seems to be my disconnect then, I think ‘best’ is the most accurate/real sounding and that’s where better ends ..... There has to be more common ground between individual interpretation (of accurate sound) than not?
Although I did date a girl once who definately made me question that theory!

Schrodinger.....Schroeder 😀 ehhh, you knew what I meant , sorry!
 
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#31,671
scottjoplin said:
Then you'll be doing a test like Richard's?
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Sure.....I’ve got everything I need to.

Right at the moment good setup is packed up and new construction is amuck......could be Feb or March before putting it back together!

This is what my future listening room looks like at the moment!
 

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#31,672
One of the chips I occasionally "roll" into the DIP8 socket in my headphone amps, is an AD817. So I figure the active circuit specification in that configuration, is 50 MHz too.

(The JFET opamp used in the DC servo is a lot slower, though.)

_
 

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#31,677
Tournesol said:
Do-you authorize-me to think aloud ?

- What should be the need of this capacitor if 0 V across it ?
- As this capacitor is used here in a bridge, is its impedance constant with frequency ? (the high capacitance value usually needed here implies an electrolytic one).
- Is the lifetime of such a capacitor equals the one of an integrated circuit with all its crap around ?
- As you pointed, can I believe my wife when she says to me, with indulgence, that size does not matter ?
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A large enough capacitor will have zero volt across it. AC, of course.

The distortion products of DC are beyond infinity, so any DC over the cap is of no relevance, distortion wise.

DC servo's have electrolytics in them, at least the ones I have seen. So the crap around the integrated circuit of a DC servo typically is punctuated with elco's.

Your wife has great diplomatic skills 🙂
 
#31,680
Caps have their places but you know you can get anal about it.

If you cannot see any difference on an AP between having the cap in or having it out then in my humble opinion you should move onto more important things.

Stop agonizing over things that really do not deserve that much attention, or to paraphrase the inimitable Mr. Pass

'So you're worried about a cap in the signal path? Get over it'
 
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