Speaker Measurements: Replacing IEC 60268-5 (Part 2) - The Importance of Measurements

This article concludes the examination by Geoff Hill of the work taking place on loudspeaker measurement standards, and the progress the International Electrotechnical Commission (IEC) has made with its update efforts, also resulting from the work of the Audio Engineering Society's Standards Committee. We learn how these new standards apply to measurements of sound in 3D space and in production environments, SPL using voltage sensitivity, and the measurements of microspeakers. This article was originally published in audioXpress, October 2022.

Geoff Hill, the inventor of the Tetrahedral Test Chamber (TTC), a member of the international Electrotechnical Commission’s standards 60268-21-2018 and 60268-22-2020, and part of the IEC Working Group TC 100/TA 20/PT 60268-22 on electrical and mechanical measurements on transducers, summarizes the progress happening on loudspeaker measurement standards. This is the first of two articles, appealing directly to all loudspeaker designers and manufacturers. This article was originally published in audioXpress, September 2022.

The September 2022 Speaker Focus issue of audioXpress discusses speaker design and testing tools and features two fascinating speaker R&D stories on the Holoplot X1 Matrix Array and Motion Feedback Desktop Subwoofers for nearfield studio application. Geoff Hill explains the latest IEC loudspeaker measurement standards, Roger Shively reports from the AES 2022 Automotive Audio conference, Christoph Sladeczek writes about Audio Objects as Platform Technology in Vehicles, and much more.