Dream meaning of a speaker
See the speakers in a dream,it is a sign that you will go to a concert where the music is going to be very loud.
If the speakers were bad in your dream, be prepared for any inconvenience, and it is possible to quarrel with a close person.
Definition I
A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer;[1] a device which converts an electrical audio signal into a corresponding sound.[2] The first primitive loudspeakers were invented during the development of telephone systems in the late 1800s, but electronic amplification by vacuum tube beginning around 1912 made loudspeakers truly practical. By the 1920s they were used in radios, phonographs, public address systems and theatre sound systems for talking motion pictures.
Link: https://en.wikipedia.org/wiki/Loudspeaker
Definition II
a device that is used to make sound (such as music or a person’s voice) louder and to send it out so that many people can hear it in a public space