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Convention Paper

Requirements Specification for Amplifiers and Power Supplies in Active Loudspeakers

Authors: Schneider, Henrik; Jensen, Lasse C.; Petersen, Lars Press; Knott, Arnold; Andersen, Michael A. E.

AES Convention 137 · Paper 9213 · October 2014

Abstract

This work aims to provide designers with a method to develop a requirements specification for power supplies and amplifiers in active loudspeakers. The motivation is to avoid over-sizing and unnecessary cost. A realistic estimation of the power supplied during playback of audio in a given loudspeaker is obtained by considering a wide range of audio source material, loudness normalization of the source material, crossover filtering, driver characteristics as well as a perceived maximum loudness/volume level. The results from analyzing a sub-woofer and a woofer reveals the peak power, peak voltage, peak current, and apparent power—thus providing a solid foundation for a requirement specification.

Details

Published in
AES Convention 137
AES Convention
137
Paper number
9213
Publication date
October 6, 2014
Session subject
Applications in Audio
Affiliation
Technical University of Denmark, Kgs. Lyngby, Denmark (See document for exact affiliation information.)
Type
Convention Paper