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Speaker ports and impedance

Wise ones,
Is there a relationship between a speaker's electrical impedance plot and the cabinet design. I have noticed that J.A of Stereophile often correlates an impedance change at the tuned frequency of a speaker's port. I'm guessing it has something to do with physical impedance, but I have not found a reference in Harley's book.
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Showing 1 response by bombaywalla

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bombaywalla
1,958 posts
 
I'm not a speaker designer but I *think* I understood this correctly:

As Thinkat mentioned there are 2 peaks for speakers with reflex ports. One peak is the resonance of the port, the other peak is the resonance of the woofer. The minima in between is the tuned freq. of the port.
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