Design and implementation of a high efficiency subwoofer

Sebastian Tengvall, Niels E. Iversen, Arnold Knott*

*Corresponding author for this work

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

Abstract

The demand for battery driven loudspeakers is increasing but the challenge of efficient low frequency reproduction remains. An alternative approach to the conventional 4th order bandpass enclosure design for a subwoofer to achieve a high peak in the passband and increase voltage sensitivity is investigated. The response is corrected with DSP to ensure a flat response in the passband. The results proved that this approach can increase the voltage sensitivity dramatically, reaching an average sensitivity of over 100dB in the passband from 45Hz to 90Hz. It also showed that the design is sensitive to construction errors. Precise assembling is required to achieve satisfactory results, while small errors can ruin the purpose of the design.

Original languageEnglish
Title of host publicationProceedings of 144th Audio Engineering Society Convention 2018
PublisherAudio Engineering Society
Publication date1 Jan 2018
Publication statusPublished - 1 Jan 2018
Event144th Audio Engineering Society International Convention - NH Hotel Milano Congress Centre, Milan, Italy
Duration: 23 May 201826 May 2018
Conference number: 144

Conference

Conference144th Audio Engineering Society International Convention
Number144
LocationNH Hotel Milano Congress Centre
CountryItaly
CityMilan
Period23/05/201826/05/2018

Cite this

Tengvall, S., Iversen, N. E., & Knott, A. (2018). Design and implementation of a high efficiency subwoofer. In Proceedings of 144th Audio Engineering Society Convention 2018 Audio Engineering Society.
Tengvall, Sebastian ; Iversen, Niels E. ; Knott, Arnold. / Design and implementation of a high efficiency subwoofer. Proceedings of 144th Audio Engineering Society Convention 2018. Audio Engineering Society, 2018.
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author = "Sebastian Tengvall and Iversen, {Niels E.} and Arnold Knott",
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Tengvall, S, Iversen, NE & Knott, A 2018, Design and implementation of a high efficiency subwoofer. in Proceedings of 144th Audio Engineering Society Convention 2018. Audio Engineering Society, 144th Audio Engineering Society International Convention, Milan, Italy, 23/05/2018.

Design and implementation of a high efficiency subwoofer. / Tengvall, Sebastian; Iversen, Niels E.; Knott, Arnold.

Proceedings of 144th Audio Engineering Society Convention 2018. Audio Engineering Society, 2018.

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

TY - GEN

T1 - Design and implementation of a high efficiency subwoofer

AU - Tengvall, Sebastian

AU - Iversen, Niels E.

AU - Knott, Arnold

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The demand for battery driven loudspeakers is increasing but the challenge of efficient low frequency reproduction remains. An alternative approach to the conventional 4th order bandpass enclosure design for a subwoofer to achieve a high peak in the passband and increase voltage sensitivity is investigated. The response is corrected with DSP to ensure a flat response in the passband. The results proved that this approach can increase the voltage sensitivity dramatically, reaching an average sensitivity of over 100dB in the passband from 45Hz to 90Hz. It also showed that the design is sensitive to construction errors. Precise assembling is required to achieve satisfactory results, while small errors can ruin the purpose of the design.

AB - The demand for battery driven loudspeakers is increasing but the challenge of efficient low frequency reproduction remains. An alternative approach to the conventional 4th order bandpass enclosure design for a subwoofer to achieve a high peak in the passband and increase voltage sensitivity is investigated. The response is corrected with DSP to ensure a flat response in the passband. The results proved that this approach can increase the voltage sensitivity dramatically, reaching an average sensitivity of over 100dB in the passband from 45Hz to 90Hz. It also showed that the design is sensitive to construction errors. Precise assembling is required to achieve satisfactory results, while small errors can ruin the purpose of the design.

M3 - Article in proceedings

AN - SCOPUS:85050011509

BT - Proceedings of 144th Audio Engineering Society Convention 2018

PB - Audio Engineering Society

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Tengvall S, Iversen NE, Knott A. Design and implementation of a high efficiency subwoofer. In Proceedings of 144th Audio Engineering Society Convention 2018. Audio Engineering Society. 2018