Summed efficiency-method for efficient vented box speaker design

Niels E. Iversen*, Theis Christiansen, Anders N. Bjørnskov, Lars P. Petersen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Loudspeakers are inefficient and conventional design methods does 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 (Ση-method), for designing vented box enclosures. The method focusses 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 Adress (PA) subwoofer application.

Original languageEnglish
Title of host publicationProceedings of Audio Engineering Society Convention 147
PublisherAudio Engineering Society
Publication date1 Jan 2019
Publication statusPublished - 1 Jan 2019
Event147th Audio Engineering Society Convention - New York, United States
Duration: 16 Oct 201919 Oct 2019
Conference number: 147


Conference147th Audio Engineering Society Convention
Country/TerritoryUnited States
CityNew York


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