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earbud technical question

Discussion in 'Music & Media' started by davidgoerndt66, Dec 22, 2011.

  1. davidgoerndt66

    Thread Starter

    Maybe someone can answer this question regarding the jack on earbuds. I've noticed some jacks have two or three separate "zones" with plastic between them, then some jacks have more "zones". What is the function of the separate areas on the jack?
     


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