MPA436B 1/4 inch free field microphone Introduction: MPA436B 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 (optional TEDS). MPA436B uses pre equalization method, with a frequency range of 10 Hz~20 kHz, and can measure sound pressure levels up to 140 dB. Each MPA436B 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. MPA436B is suitable for applications that require a large number of microphones and strict individual cost requirements, such as near-field acoustic holography (NAH), beamforming, and other array applications. characteristic: 1/4 inch free field microphone 2. Sensitivity (@ 250 Hz): 11.2mV/Pa (-39 dB re 1V/Pa) 3. Frequency response: 10 Hz~20 kHz (± 3 dB) 4. Dynamic range: 29 dBA~140 dB 5. Polarization voltage: 0V (pre polarized) 6. Pressure equalization method: front equalization 7. Optional phase matching 8. ICCP power supply preamplifier (inseparable and integrated) 9. Optional TEDS (IEEE 1451.4) Technical parameters: Sound Field Type: Free Field Diameter: 1/4“ Level (IEC 61672): Level 1 Sensitivity @ 250 Hz (mV/Pa) (± 3 dB): 11.2 (-39 dB re 1V/Pa) Polarization voltage: 0 V (pre polarized) Frequency response (Hz): 20~10 k (± 2 dB), 10~20 k (± 3 dB) Dynamic range (dBA~dB): 29~140 Self generated noise (dBA): 29 Maximum sound pressure level (dB): ≥ 140 (3% distortion) Phase matching 1:100 Hz~3 kHz: ± 3 ° 3 kHz ~ 5 kHz: ±5° 5 kHz ~ 10 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 × 34 Output interface: Lead output, customizable wire length and output connector Weight (g): 14.0 (including 0.7m coaxial cable and SMB connector) TEDS: Optional, compliant with IEEE 1451.4 (default v0.9, optional v1.0)
Introduction: MPA436B 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 (optional TEDS). MPA436B uses pre equalization method, with a frequency range of 10 Hz~20 kHz, and can measure sound pressure levels up to 140 dB. Each MPA436B 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. MPA436B is suitable for applications that require a large number of microphones and strict individual cost requirements, such as near-field acoustic holography (NAH), beamforming, and other array applications.
