- loudspeaker, speaker, speaker unit, loudspeaker system, speaker system - electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
--1 is a kind of electro-acoustic transducer
--1 is a part of
--1 has particulars:public address system, P.A. system, PA system, P.A., PA bullhorn, loud-hailer; squawk box, squawker, intercom speaker; tannoy; tweeter; woofer