Coaxial speakers are a type of speaker system in which the individual driver units radiate sound from the same point or axis. They are a type of 2-way speaker designed to take up less space and to replace single-cone speakers. Coaxial speakers use a 2-way speaker design with a tweeter, woofer, and a simple crossover built into a single speaker assembly. Most coaxial speakers provide a woofer cone with a separate tweeter for good full-range sound quality and frequency coverage unlike cheaper single-cone speakers. Coaxial speakers offer several advantages, including easy sound upgrade, more speaker manufacturing options and price ranges for buyers, and somewhat similar performance to separate 2-way component speakers without the need for a bulky separate crossover box. Coaxial speakers are popular in car audio because they save space and are a good compromise between sound quality and price.
In summary, coaxial speakers are a type of speaker system that includes a woofer, tweeter, and external crossover all in one, and they are designed to take up less space and replace single-cone speakers. They offer several advantages, including easy sound upgrade, more speaker manufacturing options and price ranges for buyers, and somewhat similar performance to separate 2-way component speakers without the need for a bulky separate crossover box.