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Convention Paper

An Alternative Approach to Minimize Inductance and Related Distortions in Loudspeakers

Authors: Carlisi, Marco; Di Cola, Mario; Manzini, Andrea

AES Convention 118 · Paper 6421 · May 2005

Abstract

Magneto-dynamic loudspeakers are affected from a wide variety of problems due to the voice coil inductance. This inductance is not a constant parameter but is dependent on the frequency, the displacement and the actual current flowing in the coil. Moreover these last two dependencies are also non-linear. Several causes of distortion, affecting mainly the vocal range, are derived from these phenomena. A practical solution to minimize the inductance is investigated.
This solution is based on a additional fixed coil positioned in the gap provided with 2 additional terminals offering various connection possibilities. Advantages of this approach will be discussed and measurements results will be shown as well.

Details

Published in
AES Convention 118
AES Convention
118
Paper number
6421
Publication date
May 6, 2005
Session subject
Loudspeakers
Affiliation
Audio Labs Systems; Eighteen Sound, Division of A.E.B. S.r.l. (See document for exact affiliation information.)
Type
Convention Paper