Audio crossovers are a class of
electronic filters designed specifically for use in audio applications, especially
hi-fi. Commonly used
loudspeaker drivers are incapable of covering the entire audio
spectrum with acceptable loudness and lack of
distortion by themselves. Thus, crossovers serve the purpose of splitting the audio signal into separate
frequency bands which can be handled by individual
loudspeaker drivers optimized for those bands. A combination of multiple drivers each catering to a different frequency band is the design pattern for most
hi-fi speaker systems. An audio crossover may also be constructed mechanically and is commonly found in
full-range speakers, portions of whose cones/dust caps/whizzer cones are decoupled at progressively higher frequencies.
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