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Is it possible to add a 3.5mm headphone jack to a pair of antique crystal radio headphones? Answered

I am looking to purchase a pair of antique headphones, and possibly fix them up to work like a new pair of headphones.  For example, would it be possible to manipulate these headphones, and add a 3.5mm headphone jack to them?

Thanks for your help.

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kelseymhBest Answer (author)2010-11-19

I think it would. They are not stereo as built -- the +/- terminals are simply split to provide identical +/- signals in parallel to each earpiece.

In terms of maintaining the integrity of the piece, you might want to just build an adapter to plug the existing end terminals, with a 3.5mm jack on the other side.

Since the leads inside each earpiece are on screw terminals, you could even remove the entire lead assembly and wire up a modern 3-lead stereo jack (common negative, left+ and right+).

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Burf (author)kelseymh2010-11-19

I've done exactly that with an old set of monaural, aircraft headphones.

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