This specification specifies the classification, quality assessment procedures, appearance characteristics and magnetic properties of permanent ferrite magnets for speakers. It also selects test items and test methods suitable for detailed specifications from the general specification GB/T 12796. . This specification applies to ring, cylindrical (sheet) and other shapes of magnets for various loudspeakers. Detailed specifications should be prepared according to this specification and should comply with the provisions of the corresponding blank detailed specifications.
SJ/T 10684-1995 history
2013SJ/T 10684-2013 Sectional specification for permanent ferrite magnets for speaker
1995SJ/T 10684-1995 Sectional specificaton for permanent ferrite magnets for speaker