A loudspeaker is a device that converts electrical signals into sound. It consists of four main components: a MEGAPHONE, WOOFER, TWEETER, and AMPLIFIER. A MEGAPHONE is a cone-shaped device that amplifies sound waves, while a WOOFER is a low-frequency speaker that produces bass tones. A TWEETER is a high-frequency speaker that produces treble tones. An AMPLIFIER increases the power of the signal before it is sent to the loudspeaker. Finally, a BULLHORN is a type of MEGAPHONE that is used to project sound over long distances. Together, these components work together to create the sound that is heard from a loudspeaker.