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Don Pearce wrote:



What has the resistance of the voice coil got to do with this? It is a
parasitic that produces nothing but heat. It is the resistive vector
of the reactive component that is of interest here.



** The topic is measuring *power dissipation* so resistance is everything.

The power dissipation in a loudspeaker is approximately 85% in the voice coil with the remaining 15% in the suspension, eddy currents and radiated sound.


And capacitances have infinite, not zero resistance.


** FFS ideal caps have zero *series* resistance.


However, the
capacitive reactance would still cause current to flow.


** But does not dissipate heat, so no power.


If you take
the RMS of that current and the driving voltage you get a figure that
looks like a power but isn't.


** FYI readers:

Don has now gone full circle, back to his original nonsense assertion.

Don has made no attempt to answer anything in my posts, he is like that wind-up toy that never stops.

Game over.



..... Phil