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[+] [S] 2 points 8 months ago (1 child)
  • [–] 1 point 8 months ago

    A basic speaker is functionally a copper coil next to a permanent magnet. A hard drive head (although I guess more specifically read arm?) is also a copper coil next to a permanent magnet. So if you push an audio signal through the coil, it vibrates and makes sound. It's missing the diaphram/cone part of the speaker, so it'll be very tinny.

    If you want to make one yourself, get a broken hard drive, and an old pair of headphones, and connect the wires to the coil and play some music.

    https://www.instructables.com/Hard-Drive-Speaker-More-Instructive-Version/

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