Automotive Wiring Diagram.Com Forum

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With the use of passive crossovers, you can drive a woofer, midbass, midrange, and tweeter or more in parallel on each channel of an amplifier and maintain a safe load (impedance level) on the amplifier across the entire frequency range. Each of these loudspeakers receive a particular range of frequencies determined by one of three crossover filters: low pass, high pass, and band pass.

The components for these consist of coils and capacitors. The value of coils and capacitors are selected by the desired crossover frequency, which is determined by the efficient operating range of the loudspeaker, the desired slope (rate of cuttoff per octave), and the frequency at which the crossover components develop a particular impedance or resistance value in relationship to the loudspeaker's impedance or resistance value. The values of coils and/or capacitors used for a particular crossover frequency for a 4 ohm loudspeaker will not be the same for a loudspeaker with a different impedance.

http://www.the12volt.com/caraudio/cross.asp


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