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4th Order Butterworth Crossover Network Design Formulas & Calculator

Crossover Network Design Formulas & Calculator

 This calculator will design a two-way fourth-order Butterworth crossover network for you. If you don't understand what any of the terms mean, click here for help.
4th Order Butterworth
Fourth-Order High Pass Filter Schematic
Fourth-Order Butterworth High Pass Filter
Butterworth Fourth-Order Low Pass Subwoofer Crossover Filter Schematic
Fourth-Order Butterworth Low Pass Filter
Bandpass Crossover Filter Schematic
Bandpass Filter
C1 = .1040 / ( Rh x f )
L1 = (.1009 x Rh ) / f
C2 = .1470 / ( Rh x f )
L2 = (.4159 x Rh ) / f
C3 = .2509 / ( RL x f )
L3 = (.2437 x RL ) / f
C4 = .0609 / ( RL x f )
L4 = (.1723 x RL ) / f
Calculate Your Crossover Here

 To use this form, enter the impedance values (at the crossover frequency) for your speakers, and then enter the frequency you want your filter to crossover at. Now, click the "Calculate Values" button, and your results will appear in the empty text boxes.

Enter Tweeter Impedance Ohms
Enter Woofer Impedance Ohms
Enter Desired Crossover Frequency  Hertz
C1 = Microfarads
L1 =  Millihenries
C2 = Microfarads
L2 =  Millihenries
C3 =  Microfarads
L3 =  Millihenries
C4 =  Microfarads
L4 =  Millihenries


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