Impedance compensation network ~ calculator

   For best design results, the crossover should "see" the same resistance from the woofer through out the frequency range.  However, the voice coil resistance changes as frequency increases. The woofer's impedance curve can be flattened by placing a resistor and capacitor between the woofer and crossover network.   The DC resistance ( R e ) and inductance ( L ) parameters of the driver are needed to determine the component's values.

Enter DC resistance ( R e ) of woofer :   ohms
Enter inductance ( L ) of woofer :   mH
 
C  =    uF
R c  =    ohms
imp.gif (2880 bytes)

   Remember to use components that can handle the desired wattage of the system.