What is another word for loud speaker?
Pronunciation: [lˈa͡ʊd spˈiːkə] (IPA) 
Loud speaker, also known as a public address system, is a device that amplifies sound and broadcasts it to a large group of people. There are various synonyms for loudspeaker, and some of the common ones include loudhailer, megaphone, bullhorn, PA system, and sound system. Loudhailer and megaphone are often used interchangeably and refer to handheld devices that amplify sound, commonly used by protesters and cheerleaders. Bullhorn refers to a horn-shaped device used to amplify sound outdoors. PA system and sound system are broader terms that encompass all types of amplifier systems used in public spaces such as schools, offices, and stadium.
