Magic Eye Tube Spectrum Analyzer

French hobbyist Sylvain came up with a fascinating project using 8 Magic Eye tubes from old equipment to make an audio spectrum analyzer. I’ve worked with magic eye tubes quite a few times, they’re very fascinating. Originally precursors to CRTs, they’ve found a lot of use as level indicators in all kinds of equipment up through about the late 1960s.

He built a beautiful project case for them, too. Click through to his blog to see the build log and all photos!

Originally reported on Hack a Day.

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One Response to Magic Eye Tube Spectrum Analyzer

  1. Jeff says:

    Nice post I’ve worked with magic eye tubes quite a few times, they’re very fascinating. In which they’ve found a lot of use as level indicators in all kinds of equipment up through about the late 1960s. Thanks a lot for posting this article.

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