Computer-controlled 3D loudspeaker measurement system for balloon measurements


Precise balloon measurements.

With our ELF, balloon measurements of loudspeakers are made easy. Define a 3D raster to be scanned and the ELF measures the loudspeaker transfer functions for all desired directions. It was designed for heavy duty and high precision. It can bear loudspeakers with a weight up to 100 kg.

Maximum flexibility.

The measured data can be exported to various formats (see below) and can be processed to calculate and visualize balloons. The ELF is controlled via a serial interface, thus, integration in your own measuring software is easy.

Download our flyer for an overview

Technical Data
maximum loudspeaker weight 100 kg
maximum loudspeaker dimension 1.5 m
any microphone distance in full anechoic rooms
high precision drive unit less than 0.27° backlash
torque limitation 200 Nm per axis
weight 80 kg


  • emergency stop switch
  • heavy duty but of delicate structure
    • influence on sound field is minimized
  • fully integrated in WinMF measuring software and EASERA
  • DLL available, to be integrated e.g. in C/C++/VB/Matlab
  • laser pointer integrated in the vertical axis to precisely determine the microphone position
  • standard data formats can be generated from measured raw data, e.g.
    • EASE
    • Ulysses
    • CLF
    • EASE Speaker Lab GLL
      (data conversion might require third party software


  • desktop PC with measuring hardware and installed software

ELF Movement

Balloon Measurement Screenshot



If you are interested in ordering or have any questions about the product, please feel free to contact us directly.