BSENIEC60268-21:2018 BSI Standards Publication Sound system equipment Part21:Acoustical(output-based)measurements bsi. BSENIEC60268-21:2018 BRITISH STANDARD National foreword ThisBritishStandard istheUKimplementationof ENIEC60268-21:2018.ItisidenticaltoIEC60268-21:2018. TheUKparticipation in itspreparationwasentrustedtoTechnical CommitteeEPL/100,Audio,videoandmultimedia systems and equipment. Alistoforganizationsrepresentedonthiscommitteecanbeobtainedon requestto its secretary. Thispublication does notpurportto includeall thenecessaryprovisions ofacontract.Usersareresponsibleforits correctapplication. TheBritishStandardsInstitution2019 Publishedby BSIStandards Limited 2019 ISBN9780580972980 ICS33.160.01 CompliancewithaBritishStandardcannotconferimmunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon31January2019. Amendments/corrigendaissuedsincepublication Date Textaffected BSENIEC60268-21:2018 ENIEC60268-21 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHENORM December2018 ICS33.160.01 English Version Sound system equipment - Part 21: Acoustical (output-based) measurements (IEC60268-21:2018) Equipements pour systemes electroacoustiques - Partie 21 Elektroakustische Gerate -Teil 21: : Mesures acoustiques (en sortie) Akustische(Ausgabebasierte) Messungen (IEC 60268-21:2018) (IEC 60268-21:2018) This European Standard was approved by CENELEC on2018-12-12. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German).A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, iceland, Ireland, Itaiy, Latvia, Switzerland, Turkey and the United Kingdom. CENELEC EuropeanCommitteeforElectrotechnicalStandardization Comite Europeen de Normalisation Electrotechnique EuropaischesKomitee fur ElektrotechnischeNormung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members Ref.No.EN IEC 60268-21:2018E