MPA417 1/4 inch free field microphone Introduction: MPA417 is a 1/4 inch free field microphone suitable for measurement in non reflective free field and semi free field environments. It uses pre polarization without the need for external polarization voltage and is equipped with an inseparable integrated ICCP powered preamplifier. It is suitable for array, impedance tube, and conventional electroacoustic measurement. The MPA417 uses a pre equalization method with a frequency range of 20 Hz to 20 kHz (± 5 dB), capable of measuring sound pressure levels up to 150 dB. Each MPA417 undergoes a high sound pressure test before leaving the factory to verify that its total distortion is ≤ 3% when reaching the rated maximum sound pressure level. MPA417 is suitable for applications that require a large number of microphones and high unit cost, such as near-field acoustic holography (NAH), beamforming, and other array applications. Application scope: Low cost microphones; Suitable for array applications such as near-field acoustic holography (NAH) and beamforming; High sound pressure testing, production line product quality inspection, impedance tube testing; Technical parameters: Sound Field Type: Free Field Diameter: 1/4“ Level (IEC 61672): Level 2 Sensitivity @ 250 Hz (mV/Pa) (± 3 dB): 0.9 (-60.9 dB re 1V/Pa) Polarization voltage 0 V (pre polarization): 0 V (pre polarization) Frequency response (Hz): 50~10 k (± 2 dB), 20~20 k (± 5 dB) Dynamic range (dBA~dB): 63~150 Self generated noise (dBA): 63 Maximum sound pressure level (dB): ≥ 150 (3% distortion) Phase matching 1:100 Hz~1 kHz: ± 3 ° 1 kHz ~ 3 kHz: ±5° kHz ~ 6.3 kHz: ±10° Pressure equalization method: front equalization Pre amplifier: inseparable and integrated Maximum output voltage (Vpeak) 2: ± 5 Output impedance (Ω):<150 Power supply mode: ICCP (2mA~20mA, 4mA typical) Temperature range for use (° C): -10~50 Humidity range (% RH): 0~90 Size (mm): Ø 7 x 61 Output interface: SMB Weight (g): 8.0
Introduction: MPA417 is a 1/4 inch free field microphone suitable for measurement in non reflective free field and semi free field environments. It uses pre polarization without the need for external polarization voltage and is equipped with an inseparable integrated ICCP powered preamplifier. It is suitable for array, impedance tube, and conventional electroacoustic measurement. The MPA417 uses a pre equalization method with a frequency range of 20 Hz to 20 kHz (± 5 dB), capable of measuring sound pressure levels up to 150 dB. Each MPA417 undergoes a high sound pressure test before leaving the factory to verify that its total distortion is ≤ 3% when reaching the rated maximum sound pressure level. MPA417 is suitable for applications that require a large number of microphones and high unit cost, such as near-field acoustic holography (NAH), beamforming, and other array applications. Application scope: Low cost microphones; Suitable for array applications such as near-field acoustic holography (NAH) and beamforming; High sound pressure testing, production line product quality inspection, impedance tube testing;
