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How to deal with worn-out threads on binding post?

My speakers have Edison binding posts. The copper threads on the binding post have worn badly over the years, so that the nuts do not screw on tightly. I would prefer not to replace the binding posts, in part because the speakers weigh 250 pounds apiece (not easy moving/transporting them), and in part because the speakers are one-off and the designer is deceased. I use speaker cables with spades, and banana plugs are not an option.

Any suggestions as to how to get the nuts to hold the spades tight against the binding post?
jimjoyce25

Showing 2 responses by jimjoyce25

jimjoyce25 OP
215 posts
 
AlbertPorter: That looks like exactly what has happened. In fact, there has been so much compression that the two halves now look like an oblong

Thank you so much for the advice! I will be careful in choosing the right diameter dowel, and will let you know how it works out.
jimjoyce25 OP
215 posts
 
It worked!!! I inserted an awl into the space between the two split halves of the barrel, and gently worked it back and forth to move the two pieces more or less back into alignment. The nuts now screw on tightly, and the speaker cable spades are now held securely in place. The next step is to find an appropriately sized insert to keep the two halves in position. (A friend suggested using a small diameter bronze rod.)

Thank you again! It's amazing what a tight cable/speaker connection will do for the sound!
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