Technology / Home Audio / Built-In Crossovers: Frequently used to limit the high-frequencies reaching a subwoofer, a low-pass filter crossover allows only frequencies below the crossover point to be amplified. A high-pass crossover allows only frequencies above the crossover point to be amplified — used to keep destructive low bass away from small speakers, so they can played safely. Crossovers may be variable or selectable. Continuously Variable means the crossover circuit can be adjusted to any frequency between the listed end points. Selectable means that any of several preset crossover points can be chosen to accomodate variuous driver (speaker) designs.
Science / Genetics / Crossovers: The exchange of genetic material between two paired chromosome during meiosis. MORE
Entertainment / Photography / Built-In Meter: Reflective light meter built directly into the camera so that exposures can be easily made for the cameras position. MORE