IEC-EN-60268-5-Loudspeakers.pdf

BRITISH STANDARDBS EN60268-5:2003Sound systemequipment-Part 5:LoudspeakersThe European Standard EN 60268-5:2003 has the status of aBritish StandardICS33.160.50BSiNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBritish StandardsBSEN60268-5:2003National forewordThis British Standard is the official English language version ofEN 60268-5:2003.It is identical with IEC 60268-5:2003.It supersedesBS EN 60268-5:1997 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeEPL/100,Audio,video and multimedia systems and equipment,which has theresponsibility to:aid enquirers to understand the text;present to the responsible international/European committee anyenquiries on the interpretation,or proposals for change,and keep theUK interests informed;monitor related international and European developments andpromulgate them in the UK.A list of organizations represented on this committee can be obtained onrequest to its secretary.Cross-referencesThe British Standards which implement international or Europeanpublications referred to in this document may be found in the BSI Catalogueunder the section entitled International Standards Correspondence Index,orby using the Searchfacility of the BSI Electronic Catalogue or of BritishStandards Online.This publication does not purport to include all the necessary provisions of acontract.Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunityfrom legal obligations.This British Standard waspublished under the authorityof the Standards Policy andSummary of pagesStrategy Committee on31July2003This document comprises a front cover,an inside front cover,the EN title page,pages 2 to 52,an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when thedocument was last issued.Amendments issued since publicationAmd.No.DateCommentsBSI31July2003ISBN0580423344EUROPEAN STANDARDEN 60268-5NORME EUROPEENNEEUROPAISCHE NORMJuly 2003ICS33.160.50Supersedes EN 60268-5:1996+A2:1996English versionSound system equipmentPart 5:Loudspeakers(IEC 60268-5:2003)Equipements pour systemesElektroakustische GeratelectroacoustiquesTeil 5:LautsprecherPart 5:Haut-parleurs(IEC 60268-5:2003)(CEI 60268-5:2003)This European Standard was approved by CENELEC on 2003-06-01.CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions(English,French,German).A version in any otherlanguage made by translation under the responsibility of a CENELEC member into its own language andnotified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerland and United Kingdom.CENELECEuropean Committee for Electrotechnical StandardizationComite Europeen de Normalisation ElectrotechniqueEuropaisches Komitee fur Elektrotechnische NormungCentral Secretariat:rue de Stassart 35,B-1050 Brussels 2003 CENELEC-All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref.No.EN 60268-5:2003 EPage 2EN60268-5:2003ForewordThe text of document 100/648/FDIS,future edition 3 of IEC 60268-5,prepared by IEC TC 100,Audio,video and multimedia systems and equipment,was submitted to the IEC-CENELEC parallel vote andwas approved by CENELEC as EN 60268-5 on 2003-06-01.This European Standard supersedes EN 60268-5:1996+A2:1996.This standard is to be used in conjunction with HD483.1 S2:1989,HD 483.2 S2:1993 andISO3741:1999.The following dates were fixed:-latest date by which the EN has to be implementedat national level by publication of an identicalnational standard or by endorsement(dop)2004-03-01-latest date by which the national standards conflictingwith the EN have to be withdrawn(dow)2006-06-01Annexes designated normative are part of the body of the standard.Annexes designated informative are given for information only.In this standard,annex ZA is normative and annexes A,B and C are informative.Annex ZA has been added by CENELEC.Endorsement noticeThe text of the International Standard IEC 60268-5:2003 was approved by CENELEC as a EuropeanStandard without any modification.In the official version,for Bibliography,the following notes have to be added for the standards indicated:ISO3743-1NOTE Harmonized as EN ISO 3743-1:1995(not modified).ISO3743-2NOTE Harmonized as EN ISO 3743-2:1996(not modified).Page 3EN60268-5:2003CONTENTS1 Scope.2 Normative references.3 Conditions for measurement.73.1 General conditions.73.2 Measuring conditions.4 Test signals.84.1 General.4.2 Sinusoidal signal.84.3 Broadband noise signal.84.4 Narrow-band noise signal.84.5 Impulsive signal.85 Acoustical environment.85.1 General.85.2 Free-field conditions.85.3 Half-space free-field conditions.95.4 Diffuse sound field conditions.95.5 Simulated free-field conditions.95.6 Half-space simulated free-field conditions.96 Unwanted acoustical and electrical noise.7 Positioning of loudspeaker and measuring microphone.07.1 Measuring distance under free-field and half-space free-field conditions.107.2 Positioning of loudspeaker in diffuse field conditions.107.3 Positioning of loudspeaker and microphone in simulated free-field conditions.108 Measuring equipment.119 Accuracy of the acoustical measurement.1110 Mounting of loudspeakers.1110.1 Mounting and acoustic loading of drive units.1110.2 Mounting and acoustic loading of a loudspeaker system.1111 Standard baffle and measuring enclosures.1111.1 Standard baffle.1111.2 Standard measuring enclosures1212 Preconditioning.1313 Type description.1313.1 General.1313.2 Loudspeaker drive units1313.3 Loudspeaker system.1314 Marking of terminals and controls.1315 Reference plane,reference point and reference axis.1315.1 Reference plane-characteristic to be specified.1315.2 Reference point-characteristic to be specified.1415.3 Reference axis-characteristic to be specified.1416 Impedance and derivative characteristics.1416.1 Rated impedance-characteristic to be specified.1416.2 Impedance curve.14