This experimental work deals with the loudspeaker-amplifier interface. The instantaneous input voltage/current relationships of loudspeakers are measured with low-pass filtered square wave at different levels. These preliminary measurement results allow us to assume that power amplifiers intended to drive loudspeakers should be designed to supply several times the current which could be expected directly from the system nominal impedance.
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https://aes2.org/publications/elibrary-page/?id=11870
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