1. IEC 60268-11:1987/AMD2:1991 Amendment 2 - Sound system equipment - Part 11: Application of connectors for the interconnection of sound system components

2. IEC 60268-11:1987 Sound system equipment - Part 11: Application of connectors for the interconnection of sound system components

3. IEC 60268-12:1987/AMD1:1991 Amendment 1 - Sound system equipment - Part 12: Application of connectors for broadcast and similar use

4. IEC 60268-12:1987/AMD2:1994 Amendment 2 - Sound system equipment - Part 12: Application of connectors for broadcast and similar use

5. IEC 60268-12:1987 Sound system equipment - Part 12: Application of connectors for broadcast and similar use

6. IEC 60268-14:1980 Sound system equipment - Part 14: Circular and elliptical loudspeakers; outer frame diameters and mounting dimensions

7. IEC 60268-16:2011 Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index

8. IEC 60268-17:1990 Sound system equipment - Part 17: Standard volume indicators

9. IEC 60268-2:1987/AMD1:1991 Amendment 1 - Sound system equipment - Part 2: Explanation of general terms and calculation methods

10. IEC 60268-2:1987 Sound system equipment - Part 2: Explanation of general terms and calculation methods