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Convention Paper

Audio Capacitors. Myth or Reality?

Authors: Dodds, Paul; Duncan, Philip; Williams, Nigel

AES Convention 124 · Paper 7314 · May 2008

Abstract

This paper gives an account of work carried out to assess the effects of metallised film polypropylene crossover capacitors on key sonic attributes of reproduced sound. The capacitors under investigation were found to be mechanically resonant within the audio frequency band, and results obtained from subjective listening tests have shown this to have a measurable effect on audio delivery. The listening test methodology employed in this study evolved from initial ABX type tests with set program material to the final A/B tests where trained test subjects used program material that they were familiar with. The main findings were that capacitors used in crossover circuitry can exhibit mechanical resonance, and that maximizing the listener’s control over the listening situation and minimizing stress to the listener were necessary to obtain meaningful subjective test results.

Details

Published in
AES Convention 124
AES Convention
124
Paper number
7314
Publication date
May 6, 2008
Session subject
Loudspeakers
Affiliation
University of Salford;Industrial Capacitors Wrexham;Industrial Capacitors Wrexham (See document for exact affiliation information.)
Type
Convention Paper