BS EN 61305-5-2003 Household high-fidelity audio equipment and systems - Methods of measuring and specifying the performance - Loudspeakers《家用高保真音响设备和系统 测量和规定性能的方法 扬声器》.pdf

1、BRITISH STANDARD BS EN 61305-5:2003 Household high-fidelity audio equipment and systems Methods of measuring and specifying the performance Part 5: Loudspeakers The European Standard EN 61305-5:2003 has the status of a British Standard ICS 33.160.50 BS EN 61305-5:2003 This British Standard was publi

2、shed under the authority of the Standards Policy and Strategy Committee on 5 November 2003 BSI 5 November 2003 ISBN 0 580 42843 5 National foreword This British Standard is the official English language version of EN 61305-5:2003. It is identical with IEC 61305-5:2003. The UK participation in its pr

3、eparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement intern

4、ational or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purpo

5、rt to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee

6、 any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and

7、 a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61305-5 NORME EUROPENNE EUROPISCHE NORM September 2003 CENELEC European Committee for Electrotechnical Standa

8、rdization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central 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 61305-5:200

9、3 E ICS 33.160.50 English version Household high-fidelity audio equipment and systems Methods of measuring and specifying the performance Part 5: Loudspeakers (IEC 61305-5:2003) Equipements et systmes audio grand public haute fidlit Mthodes pour mesurer et spcifier les performances Partie 5: Haut-pa

10、rleurs (CEI 61305-5:2003) Hi-Fi-Gerte und -Anlagen fr den Heimgebrauch Verfahren zur Messung und Angabe der Leistungskennwerte Teil 5: Lautsprecher (IEC 61305-5:2003) This European Standard was approved by CENELEC on 2003-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regul

11、ations 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 Central Secretariat or to any CENELEC member. Thi

12、s 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 Central Secretariat has the same status as the official versions. CENELEC member

13、s are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of

14、document 100/651/FDIS, future edition 1 of IEC 61305-5, prepared by IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61305-5 on 2003-09-01. The following dates were fixed: latest date by which the EN has t

15、o be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-09-01 Annexes designated “normative“ are part of the body of the standard. In thi

16、s standard, annex ZA normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61305-5:2003 was approved by CENELEC as a European Standard without any modification. Page2 EN613055:2003HOUSEHOLD HIGH-FIDELITY AUDIO EQUIPMENT AND SYSTEMS METHODS OF

17、MEASURING AND SPECIFYING THE PERFORMANCE Part 5: Loudspeakers 1 Scope This part of IEC 61305 specifies methods of measuring and specifying the performance of loudspeakers. It applies to sound-system loudspeakers for household high-fidelity audio equipment. 2 Normative references The following refere

18、nced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60268-5, Sound system equipment Part 5: Loudspeakers 1) IEC 61305

19、-1, Household high-fidelity audio equipment and systems Methods of measuring and specifying the performance Part 1: General 3 General requirement Characteristics not otherwise specified more explicitly in this standard shall be in accordance with IEC 60268-5. 4 Conditions for measurement The electri

20、cal conditions shall be those specified in IEC 60268-5. The climatic conditions shall be those specified in IEC 61305-1. 5 Test signals and acoustical environment The test signals and the acoustical environment shall be those specified in IEC 60268-5. 6 Methods of measurement The characteristics to

21、be specified and the methods of measurement shall be as given in Table 1. _ 1) To be published. Page3 EN613055:20036 Contents of specifications 6.1 Loudspeaker data to be specified in a document available to the user The specifications shall contain at least information on the characteristics given

22、in Table 1, item numbers 1, 2, and 4 to 9. 6.2 Loudspeaker data to be labelled on the loudspeaker The specifications shall contain at least information on the characteristics given in Table 1, item numbers 2, 7, 8 and 9. Table 1 Contents of specifications Characteristics to be specified Definitions

23、Methods of measurement 1. Frequency response under free- field conditions Sound pressure level as a function of frequency, measured under free-field conditions In accordance with IEC 60268-5: 2003, 21.1.2, paragraph 3 2. Effective frequency range Frequency range as the range over which the response

24、does not vary by more than 10 dB The effective frequency range can be obtained from the frequency response defined in IEC 60268-5: 2003, 21.2.1 3. Frequency response of acoustic power Sound power level in 1/3-octave bands as a function of frequency In accordance with IEC 60268-5: 2003, 22.1.2 4. Dif

25、ference of frequency responses Difference of sound pressure level of loudspeakers, which will be used in pair mode In accordance with IEC 60268-5: 2003, 21.1.2, paragraph 3. The differences in sound pressure level are measured in the effective frequency range defined in IEC 60268-5:2003, 21.2.1 5. C

26、haracteristic sensitivity level Characteristic sensitivity level measured in the effective frequency range In accordance with Table 1, number 2. In accordance with IEC 60268-5: 2003, 20.4. 6. Maximum sound pressure level limited by distortion Sound pressure level p(f 1 ) measured at the point where

27、the maximum value of either d tor d 2or d 3is equal to 10 % where d t is the total harmonic distortion; d 2is the intermodulation distortion of the 2ndharmonic; and d 3is the intermodulation distortion of the 3rd harmonic Harmonic distortion d tis measured according to IEC 60268-5:2003, 24.2, referr

28、ed to f 1Intermodulation distortion d 2and d 3are measured In accordance with IEC 60268-5:2003, 24.5 The frequency f 1shall be equal to the lower limit of the effective frequency range defined in item 2 of Table 1. The frequency f 2is given by f 2= 8,5 f 17. Rated impedance Value of a pure resistanc

29、e substituting the loudspeaker In accordance with IEC 60268-5: 2003, 16.1 and 16.2.2 8. Rated noise power Electrical power, calculated by U n 2 /R. U nis the rated noise voltage, R is the rated impedance In accordance with IEC 60268-5: 2003, 18.1 9. Rated sinusoidal power Electrical power, calculate

30、d by U s 2 /R. U sis the rated sinusoidal voltage, R is the rated impedance In accordance with IEC 60268-5: 2003, 18.4 Page4 EN613055:2003 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dat

31、ed or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard

32、only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publicatio

33、n Year Title EN/HD Year IEC 60268-5 - 1)Sound system equipment Part 5: Loudspeakers EN 60268-5 2003 2)IEC 61305-1 - 1) Household high-fidelity audio equipment and systems - Methods of measuring and specifying the performance Part 1: General EN 61305-1 1995 2) 1)Undated reference. 2)Valid edition at

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