A pro audio crossover unit is used to send the correct frequencies to the right speakers. With a Crossover (sometimes referred to as Xover units) you can send all the low frequencies to your sub speakers and all the mid-high frequencies to your top speakers. This makes the whole system run more efficient and allows the individual speakers produce the frequencies that are designed to create. This alone makes an audio crossover a great tool for any multi-box PA system
Speaker Crossovers Cont . . .
Speaker Crossovers are designed to split the audio signal into separate frequencies that can be separately routed to PA loudspeakers that are optimized for those bands