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Convention Paper

Ferrofluid as an Acoustical Design Parameter

Authors: Raj, K.; Bonvouloir, J.; Moskowitz, B.

AES Convention 91 · Paper 3195 · October 1991

Abstract

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.

Details

Published in
AES Convention 91
AES Convention
91
Paper number
3195
Publication date
October 6, 1991
Session subject
Loudspeakers
Affiliation
Ferrofiuidics Corporation, Nashua, NH (See document for exact affiliation information.)
Type
Convention Paper