The goal of a practical loudspeaker that behaves like the "perfect point source" has been long sought. Mathematical analysis shows that the general prototype for such a device does indeed exist, but it does not point to an obvious embodiment. Using this prototype, a practical flat diaphragm loudspeaker is developed, which has a substantially flat on-axis pressure response, as well as a smooth and extended power response. A fully-coupled FEA model is used to investigate the intrinsic characteristics of this radiator in both the mechanical and acoustical domains. Measurements from a real prototype loudspeaker illustrate the practicality of the method.

Authors: Bank, Graham; Harris, Neil
Affiliations: Consultant; New Transducers Ltd.(See document for exact affiliation information.)
AES Convention: 119 (October 2005) Paper Number: 6595
Publication Date: October 1, 2005
Subject: Loudspeakers

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