Audio cross overs are electronic filters found in acoustic applications . The majority of individual loudspeakers are  not able to spanning the completesound range from base to very high sound frequencies withacceptable proportional volume and without of distortion .Thus nearly all high fidelety speaker equipment employ a mixture of loud-speaker drivers each one looking after a separate frequency band . Cross-over split up the acoustic signal into discrete frequency bands that will be on an individual basis delivered to loud speakers optimized for those bands. An active crossover varies from a passive crossover simply because the splitting of the audio signal transpires before the signal is amplified. Active crossovers are available in either analog or digital varieties. In many cases digital active crossovers contain supplemental processing to the signal, such as, equalization, delay and limiting. The task of a signal crossover is to separate the sound signal into bands. These are after that seperately refined prior to them getting integrated together. A few examples are noise reduction for instance in Dolby A noise reduction; high frequency exciters; multiband distortion; multiband dynamics for instance de-essing, compression, limiting; & bass enhancement. See 90Hz.com For More Information.

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