System for electroacoustic transducers (loudspeakers) vibroacoustic measurements - Klippel MultiScanning Workbench and Near Field Scanner

Trade name
Klippel MultiScanning Workbench oraz Near Field Scanner
Technical description

Comprehensive system for small- and large- signal analysis of loudspeakers and radiation analysis. The system contains two main parts - the scanning vibrometer with the laser displacement sensor and the radiation measurement carousel robotic arm for the directivity analysis. The measurement stand is equiped with the software and soundcards that allow to measure all possible parameters of electroacoustic transducers in contactless methods.

Compliant with the standards:

IEC 60268-5, IEC 60268-7, IEC 60268-21, IEC 62777, IEC WD 63034, AES56, CEA-2034 (ANSI)

Conditions for providing infrastructure

The measurement capabilities can be made available for research purposes to other AGH units, with each measurement being performed by trained personnel from the Department of Mechanics and Vibroacoustics – no rental is possible. To determine the terms of use, please contact the equipment supervisor.

Type of accreditation / certificate:
Not applicable
Access type
External
Research capabilities
  • Measure geometry and vibration of the transducer
  • Visualize the vibration behavior
  • Show contribution to sound pressure output
  • Predict directivity 
  • Separate radial and circular modes
  • Analyze actively radiating cone regions
  • Detect loudspeaker defects
  • SPL at any point in 3D space
  • Directivity in near and far field 
  • Identifies linear transducer model (Thiele / Small )
Last update date
Sept. 18, 2024, 3:08 p.m.
Year of commissioning
2024
Measurement capabilities
  • Measures suspension
  • Single-step measurement with laser sensor
  • Nonlinear distortions
  • SPLmax and max. voltage according to IEC 60268-21
  • Continuous maximum SPL related to ANSI/CEA-2010-B
  • Thermal compression
  • Detection of low energy, impulsive disturbances (Rub & Buzz)
  • Nonlinear distortions
  • .gll directivity for a software such as EASE, CATT Acoustic, EASE Focus
Photos
Klippel Scanning Vibrometer SCN
Klippel Scanning Vibrometer SCN
Klippel Near-field scanner - directivity measurements
Klippel Near-field scanner - directivity measurements