SELECT (calculator - zobel networks)

    WARNING! If your browser does not support Java scripts or they are not enabled, the calculators will not work. Please enable Java scripting or download the latest free version of Microsoft Internet Explorer or Netscape Communicator.

    This Zobel calculator is a special circuit designed to compensate for the rise in impedance that occurs at or near the resonant frequency of a speaker. If properly designed and implemented, a Zobel network can make a good speaker sound great. Zobel's are ideal for controlling the output of midranges and tweeters. They can also allow your bass system to produce more output by controlling the impedance rise commonly seen in subwoofers at low frequencies.

    Enter the nominal impedance of the speaker and the frequency where the impedance has doubled. Capacitor values should be rounded off to the nearest hundredth.

    Nominal Impedance

    Ohms    		 Freq. Impedance Doubles

    Hertz (Hz)

    Zobel Network

    C (µf) = 1,000,000 / (6.283 x Impedance x Frequency Impedance Doubles)
    Capacitor -C

    Microfarads (µf)

    R = 1.25 x Nominal Impedance
    Resistor -R

    Ohms

    try these other calculators as well

  • narrow band pass calculator
  • cross over calculator