How does an equalizer differ from a crossover?
Because they both affect your system’s frequency response, crossovers and equalizers are often confused. A crossover is any device that limits the range of frequencies sent to a speaker or amplifier. By allowing you to choose which frequencies are sent to which of your speakers, a crossover network acts like an audio traffic cop, directing the appropriate frequencies to your mids, tweeters, and subwoofers. While electronic crossovers also allow you to adjust the strength of the signal being sent to the various speakers, an equalizer lets you precisely cut and boost the output of multiple frequencies across a broad spectrum. You can think of an equalizer as giving you more immediate, hands-on control over the overall sound of your system.