Symbol 5080 from IEC 60417 - Title/Meaning: Loudspeaker Function/description: To identify the socket, terminals or switch for a loudspeaker.
Additional information: 
The rated values, such as impedance, voltage and power, may be added to the symbol.
See also symbols 5081, 5126 and 5127
Note (2) was editorially simplified. (2013-04-05)
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/c3684252-1500-4615-83ef-b4224abf6728 200.png
Vectorization:  Mrmw