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Audio speakers contain coils which product sound by vibrating a cone. Why are speakers rated by impedance instead of inductance?

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    \$\begingroup\$ The speaker is a motor. Air causes resistance (mechanical load). So the impedance is not purely inductive. If you are really interested, you should get your hands on a speaker and measure the complex impedance at a variety of frequencies. \$\endgroup\$ – mkeith May 22 '16 at 23:08
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Because as shown here, the inductance is not the dominant feature of the electrical model of a speaker. The electrical resistance and the mechanical resistance dominate.

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