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Thread: Oxidation and the importance of well terminated speaker cables...

  1. #11
    Join Date: Apr 2017

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    I'm Tony.

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    Quote Originally Posted by Macca View Post
    IME if you use bare speaker cable then it does oxidise over time (months not days) and stripping it back to fresh adds a bit of leading edge and sparkle back to the sound. So agree there is an effect but can't see it happening in days. Maybe it depends how oxygen-free the copper wire is?
    Well unless something else was at play it happened with my cables...
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  2. #12
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    Always amuses the hell out of me when people refer to it as oxidisation

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  3. #13
    Join Date: Aug 2009

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    Well whatever, you know what I mean.
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  4. #14
    Join Date: Jan 2009

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    I'm openingabottleofwine.

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    Quote Originally Posted by Haselsh1 View Post
    Always amuses the hell out of me when people refer to it as oxidisation

    Why?

    Taken from Wikipedia (my emphasis):

    Copper does not react with water, but it does slowly react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion (passivation). A green layer of verdigris (copper carbonate) can often be seen on old copper structures, such as the roofing of many older buildings and the Statue of Liberty. Copper tarnishes when exposed to some sulfur compounds, with which it reacts to form various copper sulfides.

    Barry

  5. #15
    Join Date: Apr 2015

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    I'm Russell.

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    Quote Originally Posted by Intenso View Post
    I never soldered the tip but as the rest is gas tight I'm hoping any oxidation will be minimal.

    I'd love to try some upmarket cable but as I need 10m a channel my options are limited...
    The factory ends did not have any solder, and WBT doesnít recommend any solder. Itís just my own OCD to overdo everything. The spade is still not soldered to the crimp tube, I cranked down on the two set screws as hard as I could, and all seems to be good.

    Russell

  6. #16
    Join Date: May 2008

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    I have seen stereo systems set up for decades that just get dusted once and a while using AC zip cord with no ill effects , Cars are a different story , they are exposed to massive amounts of moisture and extreme temperature changes. I have seen cheap clear speaker wire turn green inside and in boats actually corrode away till it fails.
    If you are having this problem in your home a dehumidifier is clearly needed.
    This is the best stuff I have ever seen for resisting moisture and it really resists micro phonics on hard surfaces or in noisy RF environments. It is directional so look for the small arrows. Audison Connexion cable.
    https://www.carsound.co.uk/connectio...r-cable/page/4

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  7. #17
    Join Date: May 2010

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    My understanding is that metal corrosion is driven by electrochemical processes and are greatest with a greater difference between the metals. Could it be that the end of the cables that corroded quickly had different metal types (copper cable, gold connector for example) where as the ends that didn't corrode had metals that were not so dissimilar (copper cable, copper alloy connector ?)
    Rob.
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  8. #18
    Join Date: May 2008

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    Quote Originally Posted by ReggieB View Post
    My understanding is that metal corrosion is driven by electrochemical processes and are greatest with a greater difference between the metals. Could it be that the end of the cables that corroded quickly had different metal types (copper cable, gold connector for example) where as the ends that didn't corrode had metals that were not so dissimilar (copper cable, copper alloy connector ?)
    That is actually called disimaler metals corosion.
    There is also such a thing as inerrgranular corosion .
    The oxidisatation he is experiencing is most likely caused by humidity.I am not saying electrochemistry is not playing a roll here , but it is not the largest factor. At the rate he is experiencing moisture would be my first suspect. For copper to oxidize in just a few days his house must be like Vietnam in summer.
    Even under electalisys it takes months for disimaler metals to interact to the point he is talking about.
    Spray your connections with deoxit if the problem continues and move on with your life.
    Last edited by goraman; 21-02-2019 at 16:49.
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  9. #19
    Join Date: Dec 2008

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    Quote Originally Posted by Barry View Post
    Why?

    Taken from Wikipedia (my emphasis):

    Copper does not react with water, but it does slowly react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion (passivation). A green layer of verdigris (copper carbonate) can often be seen on old copper structures, such as the roofing of many older buildings and the Statue of Liberty. Copper tarnishes when exposed to some sulfur compounds, with which it reacts to form various copper sulfides.

    In the scientific community there is no such word as oxidisation. The word is oxidation.
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  10. #20
    Join Date: Dec 2008

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    Quote Originally Posted by Macca View Post
    Well whatever, you know what I mean.
    Wasn't having a dig at anyone on here. I haven't seen the wrong terminology used here ever.
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