Transmission Line loudspeakers use a tube behind the driver that is lined, or filled, with absorber to remove the rear radiation. They also use the resonances of the pipe to support the radiation of the driver and reduce displacement at low frequencies. While lumped element models are used for modeling sealed and vented box enclosures, they cannot be used for transmission line loudspeakers because they cannot be accurately modeled as a lumped element. Finite Element and Boundary Element models can be used but they are complex and computationally expensive. A cascaded two port method has been developed that can model varying tube area and absorption. It has been evaluated against acoustic measurements and shown to provide accurate predictions.

Authors: Hipperson, James; Angus, Jamie; Hargreaves, Jonathan
Affiliations: University of Salford, Salford, UK; JASA Consultancy, York, UK(See document for exact affiliation information.)
AES Convention: 144 (May 2018) Paper Number: 9913
Publication Date: May 14, 2018 Import into BibTeX
Subject: Loudspeakers-Part 1
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=19430

Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:   /conv/144/9913.pdf

Start a discussion about this paper!