John Curl's Blowtorch preamplifier part II - Page 2769 - diyAudio
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Old 14th September 2012, 11:07 PM   #27681
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Good info on the history of the Blowtorch.
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Old 14th September 2012, 11:09 PM   #27682
fas42 is online now fas42  Australia
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A certain amount of non-focus on the test is necessary and that is the light bulb for me. Took awhile to get the experience defined is all. Perhaps this is where the DBT causes problems in a forced concentration to hear something. Anyway, I know it sounds strange to some (many?). But it works in pool and in sports in many ways just concious mental concentration alone isnt enough and doesnt work well for this DBT. Maybe someone in the training field knows how that works. Anyway, there it is. Now I'm going to go enjoy a round of pool. -RNM
Very nicely put, Richard. As you say, the intuitive, right side of the brain is extremely astute, and often has a far better handle on certain things than the logical pathways. How that works for listening, for me, is that when I first listen to someone's system I do it out of the "corner of my ear" -- I deliberate engage in conversation, or tune into something else, while the system is running at a good volume, because then the brain can immediately sum up whether the sound is "right" or not.

Why that works is that the brain always has to eliminate the remaining levels of distortion in the sound replay, split that off from the musical content, which requires mental effort, exertion. High remanent distortion, fast onset of listener fatigue. So if you deliberately focus elsewhere the brain is then working much, much harder again, and the onset of mental overload is very fast -- you run to turn the volume down.

Thus, the goal is for the brain to be completely relaxed while listening at close to deafening levels, that's the internal flag that says the music sounds "real".

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Old 14th September 2012, 11:11 PM   #27683
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You have it! Fas42
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Old 15th September 2012, 06:23 AM   #27684
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A similar occurrence to the billiards practice is well known to cyclists - if you want to steer around that rock, don't stare at it!
So I wouldn't dismiss the concept outright. Unfortunately, it comes too close for comfort to the medium's common excuse of "bad vibes" blocking "the other side" and other such silliness. What Mr. Marsh should have concluded, IMO, is that he was concentrating wrongly, not simply fault the concentration.
My perspective basically says that if an accurate and good-sounding piece of equipment is designed and built, the method used is secondary. Let's just accurately describe/define that method.
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Old 15th September 2012, 05:27 PM   #27685
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A similar occurrence to the billiards practice is well known to cyclists - if you want to steer around that rock, don't stare at it!

So I wouldn't dismiss the concept outright. Unfortunately, it comes too close for comfort to the medium's common excuse of "bad vibes" blocking "the other side" and other such silliness. What Mr. Marsh should have concluded, IMO, is that he was concentrating wrongly, not simply fault the concentration.
My perspective basically says that if an accurate and good-sounding piece of equipment is designed and built, the method used is secondary. Let's just accurately describe/define that method.
Like I said, there is nothing wrong with DBT'ing per se. Those who aurgue the methodology are doomed to failure.
However -- Not sure anything was 'wrong'... just needed to think 'differently'. Dont know if one CAN think differently while undergoing the DBT. Doesnt seem to be possible to think two ways simultaniously. We think serially about tasks. Now I am monitoring what my brain is doing (simultaneously/parallel thinking) while I sink those hard shots to learn more about the process. -Thx RNM

Last edited by RNMarsh; 15th September 2012 at 05:34 PM.
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Old 16th September 2012, 12:04 AM   #27686
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Apparently, 'All is quiet on the Western Front' Good, now perhaps we can move forward.
Sound differences, even 'imaginary' ones, continue to exist, and at least: I have to try to understand them. That's my job! '-)
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Old 16th September 2012, 02:06 AM   #27687
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And what is possibly disturbing to some folks is that the closer you get to high level sound, the more every, single, little, tiny, thing matters, and it will drive you crazy!! Then, it truly can become balancing on the razor's edge, and the battle to retrieve always good sound can wear you down. Better, some times, just to fall back into a passable, reasonable "mediocrity" of typical hifi sound, put your feet up with a beer, and just forget about trying for the heights ...

Frank
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Old 16th September 2012, 02:19 AM   #27688
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And what is possibly disturbing to some folks is that the closer you get to high level sound, the more every, single, little, tiny, thing matters, and it will drive you crazy!!
Personally, I think it's the other way around.

se
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Old 16th September 2012, 03:32 AM   #27689
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Personally, I think it's the other way around.

se
I guess one reason why it works the way it does for me, is that as I get closer I use nastier and nastier recordings to pinpoint where the remaining deficiencies are, and these do a beautiful job of that type of highlighting. These are recordings that most people would have given up on a long time ago: say, heavily produced new wave with synthesizer sounds and effects galore, with enormously deep reverb, etc. These are the albums when you finally get them right are quite amazing, huge soundscapes that seem to extend to forever; hard work, but worth it ...

Frank
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Old 16th September 2012, 03:43 AM   #27690
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Apparently, 'All is quiet on the Western Front' Good, now perhaps we can move forward.
Sound differences, even 'imaginary' ones, continue to exist, and at least: I have to try to understand them. That's my job! '-)
OK. ... aaaaand? .... moving forward? .... ....
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