Megaphone speakers are portable, handheld devices designed to amplify the sound of voices or other audio sources. These typically consist of a cone-shaped or horn-shaped opening at one end and an ergonomic handle or grip at the other.
When the speaker is turned on, it captures sound waves from a microphone or other input source and converts them to electrical signals, then amplifies these to produce louder and more powerful audio. The size and shape of the horn or cone-shaped opening determines how much amplification there is and where the sound projection occurs.
Megaphone speakers are commonly employed at sports events, rallies, protests and other public gatherings where a large crowd needs to hear the speaker’s voice or message. They may even be employed during emergency situations to communicate important instructions or warnings to a crowd.