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Home Audio

Crossovers

Crossovers Article

More audio crossover information found below this article

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.

Another use of crossovers is multiband processing, in which the audio signal is split into bands, which are adjusted (equalized, compressed, echoed, etc) separately. After the adjustments, the individual bands are mixed together again. Some examples are: multiband dynamics (compression, limiting, de-essing), multiband distortion, bass enhancement, high frequency exciters, noise reduction (for example: Dolby A noise reduction).