BS EN 62459:2011

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Clamping of the suspension part
6 Methods of measurement
7 Static displacement x[static](F[dc])
8 Static stiffness K[static](x[static])
9 Lowest cone resonance frequency, f[0]
10 Dynamic stiffness K(x[ac])
11 Coefficients of the power series expansion of K(x)
12 Effective stiffness K[eff](x[peak])
13 Mechanical resistance R
Bibliography
Annex ZA (normative) - Normative references to international
          publications with their corresponding European
          publications

Pertains to the suspension parts of electroacoustic transducers (for example, loudspeakers).

This International Standard applies to the suspension parts of electroacoustic transducers (for example, loudspeakers). It defines the parameters and measurement method to determine the properties of suspension parts like spiders, surrounds, diaphragms or cones before being assembled in the transducer. The measurement results are needed for engineering design purposes and for quality control. Furthermore, this method is intended to improve the correlation of measurements between suspension-part manufacturers and loudspeaker manufacturers.

The measurement methods provide parameters based on linear and nonlinear modelling of the suspension part and uses both static and dynamic techniques.