Is the speaker impedance constant or variable?


We read lots of tech specs on the speakers and know that sometimes speaker impedance may vary from 2 to 6 ohms or some other values.
Does that mean that this impedance vary within one speaker or different speakers of the same brand/model might have differences?
Does the speaker impedance vary on different freequencies or it has pure active and constant resistance? Another words what are the components of the speaker impedance? Equivalent circuit diagram link or e-mail will be helpful.
128x128marakanetz

Showing 1 response by mrderrick

It will vary fom speaker to speaker and over the frequency range. Magnapans are pretty much a constant impedance though. Most speaker specs list a "nom" and "min" impedance. I belive that the "min" value is at the low end of the speakers responce. These values do come into play when selecting an amp to handle the speaker load.