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John Curl's Blowtorch preamplifier part III
John Curl's Blowtorch preamplifier part III
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Old 18th February 2018, 11:23 PM   #81
Markw4 is offline Markw4  United States
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Originally Posted by scott wurcer View Post
Trust yourself.
Richard did say most people will never hear the difference unless they listen in a very particular way. He also said it doesn't matter for 99% of designs. He seems to want people to know its not *totally* impossible for a few people to hear if they loop and practice. I don't know if that is at odds with Sy's measurements or not. I understand the math is hard to believe given the numbers, but we haven't proven it experimentally. And, unlike some seemingly impossible things, this one just might not be impossible.

On a slightly different topic, how short a time difference between two percussion instruments being sounded in monophonic do you think someone can hear? It may be less than you think, or maybe not?
Anyone can try it here: Blind testing a 5 ms Timing Difference (3-way)

Last edited by Markw4; 18th February 2018 at 11:29 PM.
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Old 18th February 2018, 11:27 PM   #82
scott wurcer is online now scott wurcer  United States
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I'll watch your crusher and raise you one Gorgeous George:
"Too bad we don't have color TV" now that's funny.
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Old 18th February 2018, 11:52 PM   #83
billshurv is online now billshurv  United Kingdom
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John Curl's Blowtorch preamplifier part III
Just to get me subscribed to the continuing saga of circular arguments

@Mark: Jan got permission to make available online all Cyril Bateman's articles on capacitor distortion. These include how to make the test setup. Cyril Bateman's Capacitor Sound articles | Linear Audio NL . There is also a presentation by Doug Self on active crossovers that covers capacitor distortion from burning amp somewhere on youtube.

I personally see no boogeymen here!
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Old 18th February 2018, 11:57 PM   #84
scott wurcer is online now scott wurcer  United States
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Regarding conflicting claims by different people, they must either be looking at different parts, or measuring differently. Obviously. Don't know why we can't just make some progress getting to the bottom of it.
You tell me, the sensationalists pick conditions to exaggerate the bad things and them apply the conclusions to all applications.

Both the picking capacitors and Bateman's articles were self published or published in hobby magazines with no technical peer review. Were there blind listening tests that would pass any serious review? I don't know, but I don't think so.

There can be an issue of professional courtesy, for instance in the case of Hawksford's wire articles at least one physicist easily pointed out in private the flaws in his article but did not publish them.
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Old 19th February 2018, 12:09 AM   #85
TheGimp is offline TheGimp  United States
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Scott, One of my uncles was convinced that wrestling was real. Woe be to the person who told him it was not. I remember him watching Gorgeous George in the 50s.
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Old 19th February 2018, 12:29 AM   #86
billshurv is online now billshurv  United Kingdom
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John Curl's Blowtorch preamplifier part III
Scott: In fairness Cyril never mentioned audibility, just measurability. H2 100dB down really doesn't keep me awake at night though. I haven't read picking capacitors.
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Old 19th February 2018, 12:37 AM   #87
Markw4 is offline Markw4  United States
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I just watched what Doug Self said in the video. First he said polypropylene capacitors have no distortion, then a bit later he said, as you can see it is very low about the same as a 5532 op amp. Okay. That's one data point. Will check out Cyril later.
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Old 19th February 2018, 12:38 AM   #88
scottjoplin is offline scottjoplin  Wales
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Scott, One of my uncles was convinced that wrestling was real. Woe be to the person who told him it was not. I remember him watching Gorgeous George in the 50s.
Did he think George was a real dandy?
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Old 19th February 2018, 12:40 AM   #89
scott wurcer is online now scott wurcer  United States
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Originally Posted by billshurv View Post
Scott: In fairness Cyril never mentioned audibility, just measurability. H2 100dB down really doesn't keep me awake at night though. I haven't read picking capacitors.
That could be true that's why I said I don't know.
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Old 19th February 2018, 12:55 AM   #90
scott wurcer is online now scott wurcer  United States
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First he said polypropylene capacitors have no distortion, then a bit later he said, as you can see it is very low about the same as a 5532 op amp
I source NOS PP for $0.50 to $1.50 for my RIAA pre-amp that's what I'm talking about. You could literally have spent $1000 on snake oil audiophile caps.
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