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GRAS 40HF
GRAS 40HF
GRAS 40HF

The 40HF is a 1" low-noise system measuring sound below human hearing threshold, noise floor below -10 dB, suitable for sound power measurements on very quiet products with extremely wide dynamic range.

· Key Specifications:

  • Sensitivity: High.
  • Dynamic range: Below -10 dB to high.
  • Frequency range: 10 Hz to 10 kHz.
  • Noise floor: Very low (below hearing).
  • Connector: Complete system.
  • Polarization: Externally polarized.
  • Size: 1".
  • Application: Quiet product testing.
Product details
Related Products
GRAS 40PL-10
GRAS 40PL-10

The 40PL-10 is a high pressure CCP free-field array microphone, phase-matched, handling high levels up to 150 dB peak, wide frequency range to 20 kHz, ideal for strong noise source measurements in arrays with high accuracy and reasonable cost.

· Key Specifications:

  • Sensitivity: 10 mV/Pa.
  • Dynamic range: 32 dB(A) to 150 dB peak.
  • Frequency range: 50 Hz to 20 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: SMB.
  • Polarization: 0 V.
  • TEDS: Yes.
  • Peak SPL: 150 dB.
GRAS 46AO-S2
GRAS 46AO-S2

The 46AO-S2 is a very short 1/2" CCP pressure microphone set, 12.5 mV/Pa sensitivity, suitable for measurements in confined spaces with short preamplifier.

· Key Specifications:

  • Sensitivity: 12.5 mV/Pa.
  • Dynamic range: 20 dB(A) to 160 dB.
  • Frequency range: 3 Hz to 10 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: Microdot.
  • Type: Pressure very short.
  • TEDS: Yes.
  • Length: Very short.
GRAS 40PL-11
GRAS 40PL-11

The 40PL-11 is a short version of high pressure CCP free-field array microphone, phase-matched, compact design for limited spaces, handling 150 dB peak levels, suitable for array measurements in confined environments.

· Key Specifications:

  • Sensitivity: 10 mV/Pa.
  • Dynamic range: 32 dB(A) to 150 dB peak.
  • Frequency range: 50 Hz to 20 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: SMB.
  • Polarization: 0 V.
  • TEDS: Yes.
  • Length: Short.
GRAS 46AC
GRAS 46AC

The 46AC is a 1/2" LEMO free-field wide frequency microphone set with 200V polarization, suitable for ultrasonic diagnostics and impulse measurements with low distortion and high resolution from fast diaphragm response.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 15 dB(A) to 148 dB.
  • Frequency range: Wide to ultrasonic.
  • Operating temperature: -30°C to +85°C.
  • Connector: 7-pin LEMO.
  • Polarization: 200 V.
  • TEDS: Yes.
  • Type: Free-field wide frequency.
GRAS 46AF
GRAS 46AF

The 46AF is a standard 1/2" LEMO free-field microphone set with 200V polarization, equivalent to CCP 46AE, suitable for medium sound level measurements with high accuracy for general diagnostics.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 17 dB(A) to 138 dB.
  • Frequency range: 3.15 Hz to 20 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: 7-pin LEMO.
  • Polarization: 200 V.
  • TEDS: Yes.
  • Type: Free-field standard.
GRAS 46AQ
GRAS 46AQ

The 46AQ is a 1/2" CCP random incidence microphone set, 50 mV/Pa sensitivity, suitable for diffuse sound field measurements in reverberant environments like vehicle cabins.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 17 dB(A) to 138 dB.
  • Frequency range: 3.15 Hz to 16 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: BNC.
  • Type: Random incidence.
  • TEDS: Yes.
  • Standard: IEC 61094 WS2D.
GRAS 46BG
GRAS 46BG

The 46BG is a 1/4" CCP pressure high pressure microphone set, low sensitivity for very high sound levels.

· Key Specifications:

  • Sensitivity: Low (high pressure optimized).
  • Dynamic range: High peak (up to high dB).
  • Frequency range: High frequency.
  • Operating temperature: -30°C to +100°C.
  • Connector: Microdot.
  • Type: Pressure high pressure.
  • TEDS: Yes.
  • Peak SPL: Very high.
GRAS 46AO
GRAS 46AO

The 46AO is a standard 1/2" CCP pressure microphone set, 12.5 mV/Pa sensitivity, suitable for high sound pressure measurements with wide dynamic range.

· Key Specifications:

  • Sensitivity: 12.5 mV/Pa.
  • Dynamic range: 20 dB(A) to 160 dB.
  • Frequency range: 3 Hz to 10 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: BNC.
  • Type: Pressure.
  • TEDS: Yes.
  • Standard: IEC 61094.