Low frequency calibrator

Low frequency calibrator

  1. 42AE Low Frequency Calibrator
    Sound pressure level: 140 dB
    Freq range: 0.01 to 250 Hz

    G.R.A.S. 42AE Low Frequency Calibrator

    The G.R.A.S. 42AE Low-Frequency Calibrator permits microphone calibration at frequencies down to 0.01 Hz for both front and rear-vented microphones. It produces a constant sound pressure level down to very low frequencies.

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