Hi
I am designing the class-d audio amplifier. I have a question on the loadspeakers. I see some papers assert as below:
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Loudspeakers are often modeled as resistors but in reality they are highly reactive. A typical 8 loudspeaker can have impedance minima as low as 4 and also behave nonlinearly.
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I wonder if the loudspeaker is 4 Ohm load, then can we think the minimum impedance is as low as to 2 Ohm? Can we have this conclusion?

Any loudspeaker expert shed some light on it?

Thanks