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In Reply to: RE: Cardas CCBP Unplated Copper Binding Posts posted by Duster on January 16, 2017 at 23:37:35
Unplated copper has the issue of oxidation possibly interfering with the signal which slowly sneaks up on you after a long period. Also true of the Edison Price.
The Pomona Tellurium Copper purports to avoid that problem. I've used them on speakers for years and never seen oxidation. There's also a similar product from the Taiwan outfit Vintage Audio Lab.
Handmade, BTW, is a great under-the-radar source for parts that's been around forever.
Speaking from years of experience, unless one lives in a corrosive environment, I have not found detrimental sonic effects due to copper oxidation, especially if an end user pays attention to the state of their connector interfaces. Even plated I/O can involve conductivity issues. My primary interest as the OP in this thread is to give a thumbs-up to how well the product sounds from an audiophile POV. It's a viable and smart option for those who seek a flavor other than a plated connector, of which I have nothing against. In fact, I'm an advocate of plated connectors, more often than not.
The site you linked to has them plated for around the same price. I would imagine that the Cardas being copper, that you should be carful about tightening them too much.
Definitely careful when tightening. I've seized the posts on each speaker one time. Was weird. Like I had skipped a thread or something, as they froze up when undoing them. Both speakers, same day. Too much spinach? More careful now. I still use a wrench to tighten, but a very small open end one. Have the seized ones still kicking around. Not sure if there is anything I can try. They feel like they would definitely break off if I tried to undo them.
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