Small-signal Loudspeaker Impedance Emulator

Arnold Knott, Niels Elkjær Iversen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Specifying the performance of audio ampliers is typically done by playing sine waves into a pure ohmic load. However real loudspeaker impedances are not purely ohmic but characterised by the mechanical resonance between the mass of the diaphragm and the compliance of its' suspension which vary from driver to driver. Therefore a loudspeaker emulator capable of adjusting its' impedance to a given driver is in need for measurement purposes. This paper proposes a loudspeaker emulator circuit for small signals. Simulations and experimental results are compared and show that it is possible to emulate the loudspeaker impedance with an electric circuit and that its' resonance frequency can be changed by tuning two resistors.
Original languageEnglish
Title of host publicationProceedings of the 136th Audio Engineering Society Convention
Number of pages9
PublisherAudio Engineering Society
Publication date2014
Publication statusPublished - 2014
Event136th Audio Engineering Society Convention - Estrel Berlin - Hotel & Convention Center, Berlin, Germany
Duration: 26 Apr 201429 Apr 2014


Conference136th Audio Engineering Society Convention
LocationEstrel Berlin - Hotel & Convention Center


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