Blog › Forums › DIY Speakers and Subwoofers › Doubt regarding the crossover and effective impedance calculation
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March 30, 2021 at 3:09 pm #13085
urslovinglykk
MemberSir 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?
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April 2, 2021 at 6:29 am #13102
123toid
KeymasterPosted by: @urslovinglykkSir 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 youWe 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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