Acoustical Exciters

Product overview

  • True pressure chamber calibration with an acoustic coupler
SQ-4.2 (Electro-Acoustic Coupler)
Frequency range: 31.5 Hz … 16 kHz

SQ-4.2 (Electro-Acoustic Coupler)

  • True pressure chamber calibration with an acoustic coupler

Product Details:

  • Frequency Range: 31.5 Hz ... 16 kHz
  • Sound pressure level: 64 dB ... 124 dB
  • true pressure chamber calibration
  • calibration for 1/2 and 1/4 inch microphones (1 inch microphones on request)


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Real free-field calibration

As one of just a few laboratories in Germany, SPEKTRA is accredited for "real free-field calibration". The advantages of this type of calibration service are obvious. The free-field microphones largely used in practice are calibrated in precisely their intended acoustic environment. This eliminates the need for conversion calculations from pressure chamber to free-field frequency response and the potential associated errors.


Scope of services

  1. Real free-field calibration up to 20 kHz for measuring microphones, sound level meters and other acoustic measuring instruments
  2. A compact anechoic space can be set up in the laboratory
  3. Pressure chamber calibration from 0.1 Hz ... 16 kHz
  4. Accredited electrical calibration of sound level meters