Speaker drivers are the components in a speaker that convert electrical signals into sound. They typically consist of a diaphragm, voice coil, and magnet. When an audio signal passes through the voice coil, it creates a magnetic field that causes the diaphragm to move, producing sound waves. There are different types of speaker drivers, including dynamic drivers, planar magnetic drivers, and electrostatic drivers. Each type has its own unique characteristics and sound reproduction capabilities. The choice of driver affects the overall sound quality and performance of a speaker system, making it an essential aspect of audio design.