: An electronic circuit that splits the audio signal into different frequency ranges and directs them to the appropriate drivers (e.g., sending highs to the tweeter).

: The actual "speakers" that produce sound. Common types include:

: The "box" that houses the drivers. It plays a critical acoustic role by preventing sound waves from the back of the driver from canceling out those from the front.

: Small drivers designed for high-frequency sounds like cymbals or high-pitched vocals.