A loudspeaker was usually a type of electronic device that made use of a microphone to make someone's voice louder. Often times such devices were connected to an intercom system, which allowed one to radio someone in another location.
- ↑ As seen in the Superfriends season 1 episode The Planet-Splitter (1973).
- ↑ As seen in The Planet-Splitter (1973).
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