Time varying behavior of the loudspeaker suspension: Displacement level dependency

Finn T. Agerkvist, Bo Rohde Pedersen

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Abstract

The compliance of the loudspeaker suspension is known to depend on the recent excitation level history. Previous investigations have shown that the electrical power as well as displacement and velocity plays a role. In this paper the hypothesis that the changes in compliance are caused mainly by how much the suspension has been stretched, i.e. the maximum displacement, is investigated. For this purpose the changes in compliance are measured when exposing the speaker to different levels and types of electrical excitation signals, as well as mechanical excitation only. For sinusoidal excitation the change in compliance is shown to depend primarily on maximum displacement. But for square pulse excitation the duration of the excitation also plays an important role
Original languageEnglish
Title of host publicationAudio Engineering Society Convention Papers
Volume127th
Publication date2009
ISBN (Print)978-0-937803-71-4
Publication statusPublished - 2009
Event127th Audio Engineering Society Convention - New York, NY, United States
Duration: 9 Oct 200912 Oct 2009
Conference number: 127
http://www.aes.org/events/127/

Conference

Conference127th Audio Engineering Society Convention
Number127
CountryUnited States
CityNew York, NY
Period09/10/200912/10/2009
Internet address

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