SELECT (calculator - crossover)

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    This crossover parts calculator will enable you to easily determine the values of the crossover network you are looking to build. You can calculate parts for 6dB, 12dB, 18dB or 24dB networks. In order to design a standard Band Pass crossover network, calculate the High Pass (HP) and the Low Pass (LP) sections seperately. Narrow Band Pass filters are described below.

    Use these formulas to calculate for 6dB, 12dB, 18dB and 24dB low pass, high pass and band pass filters.

    Enter the nominal speaker impedance and the desired crossover frequency.
    Values should be rounded off to the nearest hundredth.

    Impedance

    Ohms    		 Crossover Freq.

    Hertz (Hz)

    1st Order (6dB per Octave)

    L1 (mH) = (1000 x Impedance) / (6.283 x Crossover Frequency)
    Inductor -L1

    Millihenries (mH)

    C1 (µf) = 1,000,000 / (6.283 x Impedance x Crossover Frequency)
    Capacitor -C1

    Microfarads (µf)

    2nd Order (12dB per Octave)

    L2 (mH) = L1 x 1.414
    Inductor -L2

    Millihenries (mH)

    C2 (µf) = C1 x .707
    Capacitor -C2

    Microfarads (µf)

    3rd Order (18dB per Octave)

    L3 (mH) = L1 x 1.5
    Inductor -L3

    Millihenries (mH)

    C3 (µf) = C1 x .1.33
    Capacitor -C3

    Microfarads (µf)

    L4 (mH) = L1 x .5
    Inductor -L4

    Millihenries (mH)

    C4 (µf) = C1 x .667
    Capacitor -C4

    Microfarads (µf)

    L5 (mH) = L1 x .75
    Inductor -L5

    Millihenries (mH)

    C5 (µf) = C1 x 2
    Capacitor -C5

    Microfarads (µf)

    try these other calculators as well

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