John Curl's Blowtorch preamplifier part III

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john curl said:
This is a new area of physics that is not well understood, and as in all new things like this, trashed and ignored by typical working scientists and engineers. Someday we will know better and be more comfortable with this stuff.
The 'typical working scientists' I have known and worked with usually welcome new physics. I am going to hazard a guess that the 'new physics' you refer to is actually just old alchemy dressed up in 21st century language. Maybe one day you will know better and be less comfortable with this stuff?

indra1 said:
Problem is Quantum Physics was pure nonsense to the Relativistic physicists.
Was this perhaps a reference to Einstein having trouble believing in one of the QM schools of thought? You need to be aware that the issues troubling Einstein are still issues. Experiments always confirm the predictions of QM, but we are no closer to understanding it than Einstein was. However, this does not mean that we know nothing and so any old alchemic nonsense put forward by non-science has to be accepted as possibly true.
 
"Try and hear" I know several guys who claim they hear if they turn a power fuse - mechanically, like change direction. People claim they hear absolutely everything, and there is no limit. I am still curious about JC's intents - is it a business only, keeping his customers, or he plainly believes what he is saying, or he is simply pulling our leg. Or a mix of all these things.
As he plainly put:
By the way: I am in the audio business and I must be biased because of this. '-)
 
Yes like Charles Hansen, he once claimed he could tell if resistors were made just before a holiday because the workers were anxious to leave for the week. A single one anywhere in the input stage was obvious in seconds.

It has been roughly estimated by a few people who have some experience working with audiophiles that about 1/3 of audiophiles are highly neurotic. Hansen might have been somewhat included in that group, except he is reputed to have been able to listen quite skillfully too. Perhaps our Max (Dan) is somewhat similar in having some mix of both attributes.

Also regarding audiophiles, only a small few are non-highly-neurotic, technically skilled in audio, and skilled listeners. But, the point is that such people exist too.

Seems like some here are so struck by the very memorable neurotic behavior of some audiophiles that they assume all audiophiles are of the only one type.
 
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Now a bit different, not about BS and SO, just pure enjoy in music I was listening this afternoon.
Loudspeakers: ORION – open baffle from Linkwitz
Amplifiers: 100W CFA – three per loudspeaker
Preamplifier: GainWire mk3
Source: Benchmark DAC2

The sound is really, realy good, and I think I don’t need anything better, no exotic components just of the shelf metal film resistors, polypropylene and silver mica caps, ordinary wires (non directional 😉 ), and good quality elcos. I hope Richard will soon enjoy similar 200W CFA in Bangkok.
 

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You can see the walls!. I can't do that in my living room 🙂

On this side of the pond, it is considered uncivilized to speak about the departed in mockery.
That sentence wasn't referring to CH in particular. Mark is right. There is a level of obsessional behaviour in some audiophiles. not sure of the tag, but 'audiophilia nervosa' has been used in a light hearted way in the audio press since the early 90s at least.

Almost all are agreeable too, because it is a social activity first and foremost, being a recognized audiophile
This is an oddity as the listening is often a solitary pastime. Clearly being recognised as part of a group who sit alone and fret over the burn in time of their cables is needed?
 
Back when I measure the effect of RF on the room air I found a .5 dB increase in the 16,000 hertz octave band when RF was present. Don't remember the frequency or distance. Easy to repeat and try sweeping the RF frequency. I do have more RF power available today.

At the time I was wondering if some of the claims for performance improvement by seemingly nonsense gizmos might actually have an explanation.

FYI !!!!

http://kodu.ut.ee/~laurit/AK2/NMR_tables_Bruker2012.pdf (Not really applicable values!)

In keeping with this thread "Attributed the line to the 26.127 MHz F = 5/2 → 3/2 hyperfine transition of 14N" (Quoting out of context with no references!) But I will try that frequency.
 
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Any details about your setup and test conditions, Ed? So we may repeat it. Hope you do not speak about TV row frequency.
Pavel,

10' from a compression driver design coaxial loudspeaker at 1 watt input and a frequency around 100 MHz. RF power level was under 1/10 watt. Just enough to hint there actually might be something going on. Not enough to be practical. Switching on or off the RF source did not register immediately, so I ruled out EMI of the measuring equipment.
 
Back when I measure the effect of RF on the room air I found a .5 dB increase in the 16,000 hertz octave band when RF was present. Don't remember the frequency or distance. Easy to repeat and try sweeping the RF frequency. I do have more RF power available today.

At the time I was wondering if some of the claims for performance improvement by seemingly nonsense gizmos might actually have an explanation.

Yah, rf intrusion into a sound meter does have it's impacts...how long did the meter take to recover?

jn
 
At the time I was wondering if some of the claims for performance improvement by seemingly nonsense gizmos might actually have an explanation.

As JC said action at a distance but he forgot to mention no source of energy. Most of these devices have no source of power and certainly don't create any radiated RF field at any power level. This should be easily to verify. There is nothing there to find with any of these things why can't this be accepted and move on?
 
That would be in the category of placebo effect.

You’re far, far too polite.

Yes like Charles Hansen, he once claimed he could tell if resistors were made just before a holiday because the workers were anxious to leave for the week. A single one anywhere in the input stage was obvious in seconds.

Oh dear. Myrtle blocks, directional cables, CD pens, EI transformers and milled chassis, Beyerschlag resistors (made after the holidays) - Charley had a whole arsenal of ‘design techniques’. Of course, if you didn’t subscribe to them, he thought you were an idiot.
 
Now a bit different, not about BS and SO, just pure enjoy in music I was listening this afternoon.
Loudspeakers: ORION – open baffle from Linkwitz
Amplifiers: 100W CFA – three per loudspeaker
Preamplifier: GainWire mk3
Source: Benchmark DAC2

The sound is really, realy good, and I think I don’t need anything better, no exotic components just of the shelf metal film resistors, polypropylene and silver mica caps, ordinary wires (non directional 😉 ), and good quality elcos. I hope Richard will soon enjoy similar 200W CFA in Bangkok.

Proof you don't have to be a multi millionaire to get great sound. I still have a pair of Orions. Great sound from 8 legged devices and standard components.
 
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