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1、BRITISH STANDARD BS 6840-14: 1987 IEC 268-14: 1980 Sound system equipment Part 14: Guide for circular and elliptical loudspeakers; outer frame diameters and mounting dimensions IEC title: Sound system equipment Part 14: Circular and elliptical loudspeakers; outer frame diameters and mounting dimensi
2、ons UDC 621.396 + 681.84:621.395.623.37:621.3.08 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 This British Standard, having been prepared under the direction of the Electronic Equipment Standards Committee, was published u
3、nder the authority of the Board of BSI and comes into effect on 30 October 1987 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference EEL/32 Draft for comment 77/24381 DC ISBN 0 580 16144 7 Committees responsible for this British Standard The preparation o
4、f this British Standard was entrusted by the Electronic Equipment Standards Committee (EEL/-) to Technical Committee EEL/32, upon which the following bodies were represented: Association of British Theatre Technicians Association of Sound and Communications Engineers Limited Audio Engineering Societ
5、y British Educational Equipment Association British Kinematograph, Sound and Television Society British Radio and Electronic Equipment Manufacturers Association British Telecommunications plc Cable Television Association of Great Britain Consumer Standards Advisory Committee of BSI Consumers Associa
6、tion Federation of British Audio Independent Television Companies Association Institution of Electronic and Radio Engineers Radio Electrical and Television Retailers Association Royal Institute of British Architects Royal National Institute for the Deaf Society of Cable Television Engineers Training
7、 and Educational Systems Testing Bureau Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 BSI 09-1999i Contents Page Committees responsibleInside front cover Nat
8、ional forewordii 1Scope1 2Object1 3IEC type design1 4Sizes and mounting dimensions1 Figure 1 Circular loudspeakers3 Figure 2 Circular loudspeakers3 Figure 3 Elliptical loudspeakers5 Table I Circular loudspeakers. Outer frame diameters and mounting dimensions2 Table II Elliptical loudspeakers. Outer
9、frame diameters and mounting dimensions4 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 ii BSI 09-1999 National foreword This British Standard has been prepared under the direction o
10、f the Electronic Equipment Standards Committee and is identical with IEC 268-14:1980 “Sound system equipment” Part 14 “Circular and elliptical loudspeakers; outer frame diameters and mounting dimensions” published by the International Electrotechnical Commission (IEC). The text of this Part of BS 68
11、40 is unchanged from the text of BS 5428-5.1:1981 which is now withdrawn. All Parts and Sections of BS 5428 will be published as Parts of BS 6840 in order to achieve consistency of numbering between the corresponding Parts of the IEC Publication and the British Standard, with harmonization in view.
12、BS 6840 consists of the following Parts: Part 1: Methods for specifying and measuring general characteristics used for equipment performance (Supersedes part of BS 5428-1.); Part 2: Guide for explanation of general terms (Supersedes part of BS 5428-1.)1); Part 3: Methods for specifying and measuring
13、 the characteristics of sound system amplifiers (Supersedes BS 5428-2.)1); Part 4: Methods for specifying and measuring the characteristics of microphones (Previously BS 5428-3.); Part 5: Methods for specifying and measuring the characteristics of loudspeakers (Supersedes BS 5428-11 and BS 5428-11:
14、Supplement 1.)1); Part 6: Methods for specifying and measuring the characteristics of auxiliary passive elements (Previously BS 5428-4.); Part 7: Methods for specifying and measuring the characteristics of headphones and headsets (New.)1); Part 8: Methods for specifying and measuring the characteris
15、tics of automatic gain control devices (Previously BS 5428-7.); Part 9: Methods for specifying and measuring the characteristics of artificial reverberation, time delay and frequency shift equipment (Previously BS 5428-8.); Part 10: Specification for programme level meters (Supersedes BS 5428-9.)1);
16、 Part 11: Specification for applications of connectors for the interconnection of sound system components (Supersedes BS 5428-5.2.)1); Part 12: Specification for applications of connectors for broadcast and similar use (Supersedes BS 5428-5.3.)1); Part 13: Guide for listening tests on loudspeakers (
17、New.); Part 14: Guide for circular and elliptical loudspeakers: outer frame diameters and mounting dimensions (Previously BS 5428-5.1.); Part 15: Specification for matching values for the interconnection of sound system components (Supersedes BS 5428-10.)1); Part 16: Guide to the RASTI method for th
18、e objective rating of speech intelligibility in auditoria (New.)1). Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in
19、 British Standards; attention is drawn especially to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. 1) In preparation. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05
20、 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 BSI 09-1999iii References to page numbers in the text relate to the IEC page numbers given in brackets at the bottom of each page. Additional information. With reference to clause 3, the number of this British Standard, i.e. BS 684
21、0-14 may be used as a designation in addition to, or instead of, IEC Publication 268, Part 14. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does
22、not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard BS 5428 Methods for specifying and measuring the characteristics of sound system equipment IEC 268-5:1972Part 11:1977 Loudspeakersa (Identical) IEC 268-15:1978Part 10:1979 Pref
23、erred matching values for the interconnection of sound system componentsa (Identical) a These Parts of BS 5428 will be withdrawn when the IEC 268-5 and IEC 268-15 Part revisions, in preparation, are implemented as Parts of BS 6840. Summary of pages This document comprises a front cover, an inside fr
24、ont cover, pages i to iv, pages 1 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05
25、 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 BSI 09-19991 1 Scope 1.1 This standard applies to dimensional characteristics of single moving-coil (dynamic) louds
26、peakers of the direct radiator type. This standard is limited to: a) outer dimensions of the frame; b) mounting dimensions, for example size and disposition of fixing holes. 1.2 This standard excludes: a) cone dimensions of loudspeakers; b) depth of loudspeakers. The following items, outside the sco
27、pe of this standard, are dealt with in other parts of IEC Publication 268: a) rated impedances, IEC Publication 268-15, Part 15: Preferred Matching Values for the Inter-connection of Sound System Components. b) characteristics to be specified and the relevant measuring methods, IEC Publication 268-5
28、, Part 5: Loudspeakers. 2 Object The object of this standard is to secure as great a measure of interchangeability as seems practicable, and to discourage unnecessary divergences. This standard is intended as a guide to manufacturers when introducing new types of loudspeakers. The frames need not be
29、 identical with the shapes given, only the dimensions are to be observed as indicated. This allows the maximum liberty of choice in the design of loudspeakers, cabinets and enclosures. 3 IEC type designation Loudspeakers according to this standard shall be designated in the following way: 3.1 Circul
30、ar loudspeakers 3.2 Elliptical loudspeakers 4 Sizes and mounting dimensions 4.1 The mounting dimensions of loudspeakers shall conform to Figure 1 and Figure 2, page 3 (circular loudspeakers) and to Figure 3, page 5 (elliptical loudspeakers). 4.2 Circular loudspeakers of small dimensions are normally
31、 fixed by clamps. Frames with eyelets with fixing holes may be used conforming to Figure 1. For that reason, the fixing hole distances for these types are given in brackets. 4.3 For circular loudspeakers of large dimensions of the round style, the dimensions should preferably conform to Figure 2. 4.
32、4 The recommended range of loudspeakers and their dimensions are given in Table I and Table II. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 2 BSI 09-1999 4.5 According to present IEC practice, dimensions are given in mill
33、imetres only. Table I Circular loudspeakers Outer frame diameters and mounting dimensions (Dimensions in millimetres) Figure 1Figure 2 Rated value Outer diameter Fixing hole distances Pitch circle diameter Minimum fixing hole diameter IEC type designation Ded2d1 25 mm 31 mm 40 mm 50 mm (20 0,5) (25
34、0,5) (31,5 0,5) (40 0,5) (3,2) (3,2) (3,2) (3,2) 268-14 IEC R 25 268-14 IEC R 31 268-14 IEC R 40 268-14 IEC R 50 58 mm 63 mm 66 mm (48 0,5) (50 0,5) (52 0,5) (3,2) (3,8) (3,8) 268-14 IEC R 58 268-14 IEC R 63 268-14 IEC R 66a 80 mm 100 mm 121 mm (63 0,5) (80 0,5) 94 0,5 (3,8) (3,8) 3,8 268-14 IEC R 8
35、0 268-14 IEC R 100 268-14 IEC R 121a 125 mm 131 mm 160 mm 100 0,5 102 0,5 125 0,5 114 0,5 148 0,5 3,8 3,8 3,8 268-14 IEC R 125 268-14 IEC R 131 268-14 IEC R 160 176 mm 200 mm 204 mm 135 0,5 160 1 155 1 165 0,5 184 0,5 194 0,5 3,8 3,8 3,8 268-14 IEC R 176 268-14 IEC R 200 268-14 IEC R 204a 250 mm 315
36、 mm 400 mm 200 1 250 1 233 1 295 1 375 1 4,5 4,5 4,5 268-14 IEC R 250 268-14 IEC R 315 268-14 IEC R 400 a The types indicated with an asterisk are in common use; it is expected that for future development these types will be deprecated. 25 0 1 31,5 0 2 40 0 2 50 0 2 58 0 2 63 0 2 66 0 2 80 0 2 100 0
37、 2 121 0 2 125 0 3 131 0 3 160 0 3 176 0 3 200 0 5 204 0 5 250 0 5 315 0 5 400 0 5 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 BSI 09-19993 Figure 1 Circular loudspeakers Figure 2 Circular loudspeakers Licensed Copy: shef
38、fieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 4 BSI 09-1999 Table II Elliptical loudspeakers Outer frame diameters and mounting dimensions (Dimensions in millimetres) Figure 3 Rated valueOuter diameterFixing hole distances Minimum fixing hole
39、 diameter IEC type designation ABfgd1 40 63 mm 50 80 mm 63 100 mm 76 131 mm 31,5 0,5 40 0,5 50 0,5 52 0,5 50 0,5 63 0,5 80 0,5 107 0,5 3,2 4,3 4,3 5,0 268-14 IEC E 463 268-14 IEC E 58 268-14 IEC E 610 268-14 IEC E 713 80 125 mm 80 160 mm 80 183 mm 63 0,5 63 0,5 55 0,5 100 0,5 125 0,5 155 0,5 5,0 5,0
40、 5,0 268-14 IEC E 812 268-14 IEC E 816 268-14 IEC E 818 100 160 mm 100 180 mm 100 210 mm 73 0,5 90 0,5 70 0,5 123 0,5 130 0,5 170 0,5 5,0 5,0 5,0 268-14 IEC E 1016a 268-14 IEC E 1018a 268-14 IEC E 1021a 125 200 mm 132 183 mm 163 235 mm 100 0,5 100 0,5 117,5 0,5 160 0,5 150 0,5 166,5 0,5 5,0 5,0 5,0
41、268-14 IEC E 1220 268-14 IEC E 1318 268-14 IEC E 1623b 160 250 mm 200 315 mm 250 400 mm 125 1 160 1 200 1 200 1 250 1 315 1 5,5 5,5 6,5 268-14 IEC E 1625 268-14 IEC E 2031 268-14 IEC E 2540 a in order to cover loudspeakers in common use, the tolerances are increased for the time being. It is, howeve
42、r, expected that for future development the normal tolerances will be used. b This type is in common use; it is expected that for future development this type will be deprecated. 40 0 2 50 0 2 63 0 2 76 0 2 63 0 2 80 0 2 100 0 2 131 0 2 80 0 2 80 0 2 80 0 2 125 0 3 160 0 3 183 0 3 100 0 5 100 0 5 10
43、0 0 5 160 0 5 180 0 4 210 0 5 125 0 3 132 0 3 163 0 3 200 0 5 183 0 4 235 0 5 160 0 3 200 0 5 250 0 5 250 0 5 315 0 5 400 0 5 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 BSI 09-19995 Figure 3 Elliptical loudspeakers Licen
44、sed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14:1987 BSI 09-1999 Publications referred to See national foreword. License
45、d Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6840-14: 1987 IEC 268-14: 1980 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presen
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