The Bl-Product and lumped parameter compliance of an electrodynamic loudspeaker vary substantially with displacement at low frequencies, making these the major sources of low-frequency THD. Using a tensile/compression loadframe, it is possible to measure the dynamic compliance of cones and spiders before they are built into loudspeakers. It is also possible to measure a normalized Bl-Product for voice coil and motor structure combinations. All of the measured force versus displacement data can be represented by truncated power series expansions. Additionally, the spider and cone data sets can be combined by the principle of superposition. This results in a measured, lumped parameter, dynamic compliance. After the components are measured they can be built into loudspeakers, and the power series coefficients can be compared with the low-frequency second- and third-order distortion.

Authors: Heed, Tom; Iraclianos, S.; Gruenhagen, D.
Affiliations: Oxford International Ltd., Chicago, IL ; Plantronics Inc., CA(See document for exact affiliation information.)
AES Convention: 100 (May 1996) Paper Number: 4206
Publication Date: May 1, 1996 Import into BibTeX
Subject: Transducers
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=7566

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes13)   /pp9496/pp9605/4134.pdf

Start a discussion about this paper!