Loudspeakers are inefficient and conventional design methods do not consider the efficiency in the design process. With the rise of Digital Signal Processing (DSP) the frequency response can be corrected with pre-filtering. Based on a frequency domain analysis of vented box enclosures this paper proposes a new method, the Summed efficiency-method (S?-method), for designing vented box enclosures. The method focuses on mapping the efficiency and SPL output vs. volume and tuning frequency enabling the designer to perform knowledge-based trade-off decisions in the design process. A design example shows how the method can be used to improve the efficiency with over 70% compared to a conventional maximum flat alignment for a compact Public Address (PA) subwoofer application.

Authors: Iversen, Niels Elkjær; Christensen, Theis; Bjørnskov, Anders; Petersen, Lars
Affiliations: ICEpower a/s, Copenhagen, Denmark; Technical University of Denmark, Kgs. Lyngby, Denmark(See document for exact affiliation information.)
AES Convention: 147 (October 2019) Paper Number: 10310
Publication Date: October 8, 2019 Import into BibTeX
Subject: Product Development
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=20682

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