Lautsprecher

Etymology
From, a.

Noun

 * 1) loudspeaker
 * 2)  loudhailer electronic megaphone
 * 3) public address system, PA system, PA,  tannoy an electronic voice-amplification apparatus, usually containing a set of two loudspeakers and a central control unit, used for singing, giving a speech, play-by-play commentary at events, or broadcasting in public areas like in airports, stations, etc.
 * 1) public address system, PA system, PA,  tannoy an electronic voice-amplification apparatus, usually containing a set of two loudspeakers and a central control unit, used for singing, giving a speech, play-by-play commentary at events, or broadcasting in public areas like in airports, stations, etc.