AES E-Library

Optimum Diaphragm and Waveguide Geometry for Coincident source Drive Units

Coincident source loudspeakers avoid the response and directivity irregularities seen with conventional spaced drivers in the crossover region. Earlier work has shown that by placing the high frequency driver at the apex of the low frequency diaphragm the directivity of both drivers may be regularized at the crossover frequency. This paper describes the application of finite element and boundary element methods to explore how some simple sources interact with various boundary conditions. A novel geometry giving much-improved bandwidth and directivity is introduced. Simulated results of an idealized high frequency driver using this geometry are compared to those of an idealized direct radiating dome. The implementation of the new design using this novel structure is discussed and measured results from the complete design are presented.

Author: Dodd, Mark
Affiliation: GPAcoustics
AES Convention:121 (October 2006) Paper Number:6886 Import into BibTeX
Subject:Loudspeakers

Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 121Papers)   /121/6886.pdf

Start a discussion about this paper!