Most types of speaker are a microphone, they just need to be wired up correctly ... | Hacker News

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		HelloNurse on Jan 15, 2024 \| parent \| context \| favorite \| on: He spent his life building a $1M stereo Most types of speaker are a microphone, they just need to be wired up correctly (hence the mention of a "capable preamp") to be used as one. For example, a piezoelectric device that deforms when driven by an electric current produces a little current when deformed by external forces.

ddingus on Jan 15, 2024 [–]

"Capable"

As in capable of amplifying the low signal from the speakers reasonably without too much noise. There is likely a proper term I do not know.

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