Blog Forums DIY Speakers and Subwoofers Doubt regarding the crossover and effective impedance calculation

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    • #13085

      Sir i have a doubt to ask you.
      When we build a 3 way tower speaker with 3 different rated impedance drivers like 8(tweeter)+4(mid bass driver)+4(woofer).And we connect them through a 3 way crossover network what would be the effective impedance for amplifier?
      I mean to know what would be the effective impedance of that box and how to calculate that?
      Thank you

    • #13102
      123toid
      Keymaster
      Posted by: @urslovinglykk

      Sir i have a doubt to ask you.
      When we build a 3 way tower speaker with 3 different rated impedance drivers like 8(tweeter)+4(mid bass driver)+4(woofer).And we connect them through a 3 way crossover network what would be the effective impedance for amplifier?
      I mean to know what would be the effective impedance of that box and how to calculate that?
      Thank you

      We need a little bit more information than that.  Do you have an impedance chart?  I did a video on this a while ago, that shows you the basics of it. 

       

       

      But if you want specifics, we will need to see the impedance chart.  This is because impedance is not linear.  It goes up and down with the frequency.  The standard when selling a speaker is the impedance should never drop below 20% of the rated impedance.  So if you want it to be rated as a 4 ohm, it shouldn’t go below 3.2ohm.


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