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Convention Paper

Design of a Coincident Source Driver Array with a Radial Channel Phase-Plug and Novel Rigid Body Diaphragms

Authors: Dodd, Mark; Oclee-Brown, Jack

AES Convention 127 · Paper 7846 · October 2009

Abstract

The simple source characteristics that coincident source driver array arrays promise are an attractive design goal but many engineering obstacles must be overcome to avoid undesirable complex behaviour. This paper outlines an innovative design approach which achieves simple source behaviour over several octaves and avoids the complex acoustical and vibrational behaviour found in traditional drivers.

The high frequency section of the driver combines techniques for optimising the response introduced by Dodd [[Dodd2006]] and the radial channel phase-plug design, introduced by the authors [[Dodd2008#2]]. The midrange unit uses a cone with novel geometry allowing it to move as a rigid body to over an octave above the crossover frequency. The resulting driver and its measured behaviour is described in the light of some possible alternative approaches.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7846
Publication date
October 6, 2009
Session subject
Transducer Modeling and Design
Affiliation
GP Acoustics (UK) Ltd., Maidstone, Kent, UK; KEF Audio (UK) Ltd., Maidstone, Kent, UK (See document for exact affiliation information.)
Type
Convention Paper