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Micro Suspension Part Measurement (MSPM)

Features and Benefits

  • Specification of suspension parts
  • Optimal driver design in R&D
  • Defining mechanical limits
  • Measurement of the nonlinear stiffness K(x) of bare membranes without attaching to a loudspeaker
    • Suspension parts of micro speakers, headphones, tweeters and microphones
    • Small membranes (diameter <7cm)

The Micro Suspension Part Measurement (MSPM) is designed for the measurement of the small and large signal parameters of small suspension parts (micro speakers, headphones, tweeters, microphones). The suspension part is glued or clamped into a panel and clamped onto a sealed pressure chamber. The diaphragm is deflected by the sound pressure generated by a sensitive midrange transducer as used in horn loaded PA equipment. The parameters Resonance frequency, Q-factor, stiffness, moving mass and mechanical resistance are determined dynamically by a simultaneous measurement of displacement and sound pressure.

Demo Video (Introduction)

MSPM Pro and MSPM Lite

Measurement of resonance frequency & Q-factor and identification of linear parameters

  • Stiffness
  • Moving mass
  • Mechanical resistance R

All features of MSPM Lite
Additional feature: measurement of the nonlinear stiffness K(x)

MSPM Bench

The MSPM Bench is a small pressure chamber designed to produce high sound pressures. It is used to pneumatically excite a clamped small diaphragm passively to monitor its vibration behavior. A sealed outlet is used for a microphone to measure the sound pressure in the chamber directly.




KLIPPEL Analyzer 3 

dB-Lab Software
• MSPM Software

Transfer Function Measurement (TRF)
Linear Parameter Measurement (LPM)

• MSPM Bench
Laser LK-H52
Power Amplifier
• Computer

Laser Positioning:
• LST Bench, Pro Stand or SCN Vibrometer

Related Information

Other Modules of the R&D System 
Suspension Part Measurement (SPM):
   For linear and nonlinear testing 
Linear Suspension Test (LST)


Germany: 102007005070; USA: 8,078,433B2; China: ZL200810092055.4; Japan: 5364271; India: 162/DEL/2008