When ferrofluid is incorporated into the voice coil gap of a dynamic speaker, the acoustical parameters such as the mechanical damping factor. (Qm), harmonic distortion and heat transfer can be modified. This paper describes how various properties of a ferrofluid such as the magnetization, viscosity and quantity affect acoustical performance. The volatility of ferrofluid and its impact on speaker behavior was also investigated. The study is conducted on three types of drivers: tweeter, midrange and woofer and provides a valuable design guide.

Authors: Raj, K.; Bonvouloir, J.; Moskowitz, B.
Affiliation: Ferrofiuidics Corporation, Nashua, NH
AES Convention: 91 (October 1991) Paper Number: 3195
Publication Date: October 1, 1991 Import into BibTeX
Subject: Loudspeakers
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=5521

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 aes12)   /pp9193/pp9110/3255.pdf

Start a discussion about this paper!