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40PP-10 CCP Free-field QC Microphone
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40PP-10 CCP Free-field QC Microphone
The GRAS 40PP-10 Production-Line Test Microphone is a robust, cost-effective microphone designed for use in the production-line testing of loudspeakers and acoustic transducers. It has a wide frequency range reaching up to 20 kHz and a large dynamic range from <33 dB(A) to 128 dB.
The cost-effectiveness of the 40PP-10 is a key consideration when setting up multiple production lines. Close manufacturing tolerances provide the 40PP-10 with a high degree of interchangeability – a major advantage when used in production-line test setups.
The robust standard BNC connector of the 40PP-10 ensures an easy-to-handle setup and supports the use of standard RG58 cables all the way from the microphone to the input module.
Key Specifications
| Polarization/Connection | 0 V / CCP |
| Frequency range (±1.5 dB) | 50 Hz to 5 kHz |
| Frequency range (±2 dB) | 10 Hz to 20 kHz |
| Dynamic range lower limit (microphone thermal noise) | <33 dB(A) |
| Dynamic range upper limit | 128 dB |
| Set sensitivity @ 250 Hz (±2 dB) | 50 mV/Pa |
| Power supply (Constant Current Power) | 2 to 20 mA |
| Microphone venting | Front |
| Output impedance | <50 Ω |
| Temperature range, operation | -10 to 50 °C / 14 to 122 °F |
| Temperature range, storage | -20 to 60 °C / -4 to 140 °F |
| Influence of axial vibration @1 m/s² | 55 dB re 20 µPa |
| TEDS (IEEE 1451.4) | 27 v. 1.0 |
| Connector type | BNC |
| Weight | 24 g / 0.85 oz |
Specifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.
