Definition
Crossover frequency
The boundary where a signal is split between drivers or between a speaker and a subwoofer. In a passive loudspeaker it is fixed by the crossover network; in an AV processor it is a configurable setting verified by measurement.
Also known as: crossover point, XO
Why this term matters
Crossover frequency appears throughout our guides because it changes the outcome of a setup decision. Linking to a single stable definition keeps our articles consistent and gives answer engines an unambiguous entity to resolve.