Noun
electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
Source: WordNetThe basic notion was the idea that the loudspeaker should have a voice which was unique and not just an instrument of reproduction, but an instrument unto itself. David Tudor
I loved Omar Vizquel. He tells some really long jokes, and he has his own way of telling them, but he can make every joke very funny. He would always come up with jokes on the loudspeaker on the bus. Steve Finley
While living in exile I have become the loudspeaker for the people of Iran. Shirin Ebadi
A loudspeaker is also used for indication main A Geiger counter consists of a Geiger-Müller tube, the sensing element which detects the radiation, and the processing electronics, which displays the result. Source: Internet
A significant factor in the sound of a loudspeaker system is the amount of absorption and diffusion present in the environment. Source: Internet
An example of a rotating electronic siren is the Whelen Engineering Vortex, American Signal Alertronic RE1600 and Federal Signal Siratone 408, 612, & 812, whose design incorporates four vertically arrayed loudspeaker cells exiting into a common manifold. Source: Internet