AES2-2012, AES standard for acoustics - Methods of measuring and specifying the performance of loudspeakers for professional applications - Drive units, has been published.
This document is a recommended practice for describing and specifying loudspeaker components used in professional audio and sound-reinforcement systems. The document considers high-frequency and low-frequency drivers and passive loudspeaker systems for professional applications, and identifies the relevant methods of measurement. Specifications are given for describing frequency response, impedance, distortion, and power handling. This document does not consider sub-components such as spiders or cones. It is intended for loudspeaker system designers, and drive-unit manufacturers.
This document is a substantial revision of AES2-1984, which it supersedes.