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Old 30th January 2013, 10:34 AM   #51
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This is an interesting academic article about silver sulphide (tarnish is from sulphur compounds in the air, not the oxide)
https://openaccess.leidenuniv.nl/bit...pdf?sequence=7
They measure non linearity.
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Old 30th January 2013, 12:12 PM   #52
Pano is offline Pano  United States
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A friend of mine designed these. Closer to copper than brass. The tellurium is added to make it machinable. I own a few, I like them.
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Old 30th January 2013, 12:21 PM   #53
tinitus is offline tinitus  Europe
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seems ordinary...but looking closer they appear to be very cleverly designed

looks like they have a very firm tight grip on the speaker wire, without crushing it
simple and effective
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Old 30th January 2013, 12:27 PM   #54
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A friend of mine designed these. Closer to copper than brass. The tellurium is added to make it machinable. I own a few, I like them.
a friend of mine bought some of these. turned out to be brass instead of gold plated red metal
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Old 30th January 2013, 12:42 PM   #55
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It was Tiffany at one time... SY's recollection is correct.

As far as I can see, these connectors were all being made in Taiwan at one time, some still are. Others are being made in China. They all look about the same visually.

My experience is at variance with those whose experience says that it's all pretty much the same. Imo, it may well all sound the same, but it may not.

I have had the daunting experience of preparing one of my Symphony No.1 amps late in the night, for next day shipment to asia and hearing something dramatically "off" in the spatial and tonal presentation.

I thought that some parts had been installed incorrectly on the boards, that's how noticeable it was. What it turned out to be is that I used some binding posts that were from a different manufacturer. Once I changed back to some of the NOS HH Smith that I usually used, the problem went away. I was not dreaming this up, I was major league panicked by what I was hearing and the lack of time to correct it.

Why this happened? No idea. Visually the binding posts that were NG looked identical pretty much.

I am not saying that this is a regular occurrence, or that I can tell you what happened or why.

Also, I can say with some certainty that the type of wire used internally in an amplifier can and does have an effect upon the perceived nature of the sound heard.

Obviously, all this assumes a rather clean system, including clean, low distortion speakers, otherwise none of anything is likely to make a clearly audible difference, one way or the other.

For years folks tried to say that things like MF resistors are all the same, but now it has been documented that there are distortion signatures. The levels are very low, so why should you be able to hear the effect at all? Dunno, but in many cases one can.

Metals and materials may well play a role in what is heard. Knowing what is doing what and controlling that and working with it is another matter. Not so easy.

>diypass, look at the Cardas site, they list dealers and distributors.
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Old 30th January 2013, 03:10 PM   #56
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a friend of mine bought some of these. turned out to be brass instead of gold plated red metal
why this ?
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Old 30th January 2013, 03:47 PM   #57
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>diypass, look at the Cardas site, they list dealers and distributors.
ok, but some posts ago i writed :
"now to increase quality, i've seen these : CCRR S (Binding Post) that are in full real copper, but i would mount them on an alluminium plate like this :
Dayton Audio SBPP-SI Binding Post Plate Silver Anodized - Binding Posts & Plates - Speaker Cabinet Accessories - Loudspeaker Components
but for cardas i found nothing.
someone could help me ?"
...but no aswer
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Old 30th January 2013, 03:49 PM   #58
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...also, are cardas binding posts in real coppoer ?
if yes, are they robust to mechanical stress ?
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Old 30th January 2013, 04:07 PM   #59
JMFahey is offline JMFahey  Argentina
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Copper is chemically and mechanically poor, so the normal solution is to use brass.
I would be quite surprised if somebody used actual copper.
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Old 30th January 2013, 09:53 PM   #60
tvrgeek is offline tvrgeek  United States
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Barrier strips. Heavy brass and brass screws. Nickle plated. Screw driver tight.

Between any of the metals mentioned here at AF frequencies, the choice IS TOTALLY IRRELEVANT and this is just another one of those audiophile mystique fads that has nothing to do with sound reproduction. Buy them for bling or bragging rights, not for any sonic attributes.

What is "real" copper? Could you describe "fake" copper? Or are you talking about a lot of voice coils that are copper plated aluminum. ( lighter ) If you want to play those games, please talk about the impurities. How much lead, tin, iron, oxygen...... Yes, oxygen It is ADDED to reduce the impurities. Just don't come back and tell me micro-ohms make a patuties difference in a circuit with 6 or 7 Ohms DC resistance, relays, fast-ons, fuses (gasp), and various "impure" components.
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