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John Curl's Blowtorch preamplifier part III
John Curl's Blowtorch preamplifier part III
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Old 26th May 2019, 11:14 AM   #20011
scott wurcer is offline scott wurcer  United States
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Quote:
Originally Posted by Max Headroom View Post
Goop makes directional effects of standard cables more obvious, and also makes more obvious that the TS/GC cable is indeed essentially non directional.
Careful Goop is already a registered trademark.
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Old 26th May 2019, 11:43 AM   #20012
Max Headroom is offline Max Headroom  Australia
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Thanks I use it in fun, in honour of whichever smart alec it was here that named it so. Goop is actually a good name for cosmetics, an Aus colloquial name is Spakfilla.
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Old 26th May 2019, 11:52 AM   #20013
scottjoplin is offline scottjoplin  Wales
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Originally Posted by Max Headroom View Post
Thanks I use it in fun, in honour of whichever smart alec it was here that named it so.
Goop is actually a good name for cosmetics, an Aus colloquial name is Spakfilla.
In that case I take it back
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Originally Posted by scottjoplin View Post
Dan, I take it all back, congratulations on your partnership with Gwyneth Paltrow
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Old 26th May 2019, 12:04 PM   #20014
Tournesol is online now Tournesol  Belgium
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Quote:
Originally Posted by Max Headroom View Post
I can and have made technically correct recordings and they are in the folders/files posted, you have just seized on a couple of recordings that were not 'perfect' in order to bolster your 'argument' which is based on coarse 'theory'.
You are mistaken. Most of us do not deny that you are convinced to had heard a difference. You have to accept as an hypothesis it can be an auto suggestion as well. The question is not on the effects, but the cause. If you can hear a difference, you HAVE to explain yourself and others why. Ensure the problem exists before to propose a solution. And this solution HAS to be based on phenomena and laws that has been demonstrated as physical laws, verified as correct (working) in each and every case. Not by some mystical smoky theories that is the product of your imagination.


Almost everyone agrees (apart you and J.C.?) that a copper cable is not directional. If something goes, in your particular case (your set-up) in the opposite direction, you must first look elsewhere, if something resembling a zener diode in parallel with some capacitor is not in your circuit. Probably hidden in the interconnections and layers of impurities that cover your contacts.
Hence:
Quote:
Originally Posted by Max Headroom View Post
My determination of directional characteristic is by swapping cable directions and listening....the sound changes follow cable changes, and both channel cables exhibit the same effects, ie [I]there is nothing wrong with the interconnects.
The fact that you have published files with drops makes bad interconnect highly likely. You have the same result with different cables ? Look around in the part of YOUR circuit that do not change between the two tries.

When so many contributors from so many different backgrounds are telling you the same thing: why are you stubborn?
You will not sell your magic cables here. And, if you want to sell them elsewhere, look more on your "story telling" than on your copies of files.
For the moment neither one is convincing.
Just my two cents
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Last edited by Tournesol; 26th May 2019 at 12:15 PM.
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Old 26th May 2019, 12:14 PM   #20015
Max Headroom is offline Max Headroom  Australia
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Originally Posted by indra1 View Post
Try Specialist in craft wire, knitted craft wire, silver wire, enamelled copper, resistance wires, stainless steel, plated wires and many more!, they have the pure 99.99% soft and sterling 925. Use 2-3 feet length for listening tests.
Thanks cool, great source of wires, a few alloys I didn't know about.
Dan.
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Old 26th May 2019, 12:34 PM   #20016
Tournesol is online now Tournesol  Belgium
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Originally Posted by Max Headroom View Post
Thanks cool, great source of wires, a few alloys I didn't know about.
Because the price of Copper has increased a lot, many network cables are now made of aluminium, like during the second world war. Notice they don't add any bit error when a file is transmitted across them. Even if you reverse head to tail the cable direction.
Because Aluminium is not such a good conductor, the wire is covered with a thin slice of copper, that transmit the HF (skin effect) and protect the aluminium from oxygen and the instant formation of isolating alumina.

As I use network cables for my line interconnects at home, I tried to compare them with pure copper ones by careful listenings, to figure out if I was able to feel any difference in the reproduction of music. 0, NADA, nothing.

Because copper resists better to repeated bending, I continue with copper. But I know WHY.
I could perhaps re-sell them by telling a nice story that aluminum makes the sound lighter? ;-)
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Last edited by Tournesol; 26th May 2019 at 12:55 PM.
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Old 26th May 2019, 02:02 PM   #20017
Max Headroom is offline Max Headroom  Australia
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Originally Posted by scottjoplin View Post
I've got some silver plated wires, does that count?
IME silver plated copper can sound overly/wrongly bright, tin plated copper can sound overly dull/damped.
IME clean silver can sound good and add a subtle/fine lift in highs and subjective dynamics and clarity.


Dan.
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Old 26th May 2019, 02:08 PM   #20018
jneutron is offline jneutron  United States
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Originally Posted by Tournesol View Post
Because the price of Copper has increased a lot, many network cables are now made of aluminium, like during the second world war. Notice they don't add any bit error when a file is transmitted across them. Even if you reverse head to tail the cable direction.
Because Aluminium is not such a good conductor, the wire is covered with a thin slice of copper, that transmit the HF (skin effect) and protect the aluminium from oxygen and the instant formation of isolating alumina.
I suspect the copper clad is there to make electrical connections properly. Aluminum oxidizes and ruins the connection integrity. While copper will assist at the very high frequencies, I would say it is to allow using the standard connectors.


Jn
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Old 26th May 2019, 02:32 PM   #20019
scott wurcer is offline scott wurcer  United States
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Originally Posted by vacuphile View Post
When a word is used in a particular meaning by experts such as Neumann, JBL, and any other googleable quantity, except by you, to mean the horizontal and vertical coverage of a sound source, whom to trust?
I remember how long it took to realize the "definition" of non-linear in an R/C circuit was the fact that an exponential is never a straight line. That definition with respect to the concept of linear time invariant conditions for circuit analysis you won't find in any reference.
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Old 26th May 2019, 02:33 PM   #20020
Tournesol is online now Tournesol  Belgium
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Originally Posted by jneutron View Post

I suspect the copper clad is there to make electrical connections properly. Aluminum oxidizes and ruins the connection integrity. While copper will assist at the very high frequencies, I would say it is to allow using the standard connectors.
I thought to this, of course. But the way RJ plugs cut both the isolator and enter IN the wire, when crimped with the pliers, leaves me to think that the contact is made with aluminum. Once the two parts in close contact with high pressure, they must be safe from the air ?
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Last edited by Tournesol; 26th May 2019 at 02:35 PM.
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