Loudspeakers are transducers that convert electrical audio signals into sound. They are essential components in audio and video systems. Loudspeakers have several key characteristics including efficiency, noise level, frequency response, distortion, directivity, impedance, and power handling capacity. The main parts of a loudspeaker are the driver, enclosure, diaphragm, cone, spider, surround, basket, and magnet assembly. The driver converts electrical signals to mechanical motion of the diaphragm and cone to produce sound waves.