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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