AES E-Library

AES E-Library

The Dependence of Loudspeaker Design Parameters on the Properties of Magnetic Fluids

Document Thumbnail

Data and theory are presented to show how the properties of magnetic fluid (ferrofluid) added to the air gap of loudspeakers affect the driver performance parameters. Voice-coil temperature and transient power handling are shown to depend on the thermal conductivity of the fluid in the gap. The dependence on fluid viscosity of loudspeaker resonance, frequency, mechanical Q, and impedance is discussed, and potential advantages in design are presented. The centering of the voice coil by magnetostatic forces, which can reduce the occurrence of voice-coil rub, is also discussed.

JAES Volume 28 Issue 1/2 pp. 17-25; February 1980
Publication Date:

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:

Start a discussion about this paper!

AES - Audio Engineering Society