Description
Product Video
Features
Performance
Test Conditions: Temperature 23 ℃, Relative Humidity 50 %RH
Dimensions
Microphone Unit
From Sound Level Meters and Acoustic Imagers to Calibrators and sound level sensor for professional testing and research.
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AWA14423-S04E 1/2" Free-field Measurement Microphone Set
Prepolarized design convenience: eliminates the need for external polarization voltage, simplifying power supply requirements and system setup
Broad frequency coverage: typical 3.15 Hz–20 kHz response supports a wide range of standard acoustic measurement needs, from low-frequency to full audible-range analysis
Free-field measurement precision: optimized for anechoic and semi-anechoic environments, delivering accurate, directionally-correct measurement results
High sensitivity and stability: precision capacitive sensor design ensures consistent, reliable performance across repeated measurements and over time
Smart sensor integration: TEDS support (IEEE 1451.4, V1.0) enables automatic sensor recognition and configuration, streamlining setup in multi-channel and automated test systems
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Class 1SLM -
Mobile App -
IEC61672
01
Product Description
The AWA14423-S04E is a unit comprising a free-field, prepolarized measurement microphone and a preamplifier. Designed specifically for acoustic measurement applications, it comes with an individual calibration certificate and is suitable for acoustic environments characterized by free-field conditions or sound waves incident from specific directions (such as anechoic or semi-anechoic chambers). Featuring a high-precision capacitive sensor, the unit offers a wide frequency range (typically 3.15 Hz to 20 kHz), high sensitivity, and excellent stability. It is compatible with mainstream acoustic analysis instruments and is widely used in applications such as noise source localization, acoustic performance testing of equipment, and architectural acoustics assessment.
Product Video
Features
Applications of Free-Field Microphone Sets
Free-field microphone sets feature a wide frequency response range, making them suitable for various measurement scenarios. Designed specifically for environments free of reflections or echoes, they are widely used in fields such as acoustic research, noise monitoring, and sound system testing.
Compatibility
The AWA14423-S04E measurement microphone set requires an external constant-current power supply module capable of delivering 2 mA to 20 mA of current and an open-circuit voltage of 24 V. Different manufacturers may use various terms for such power modules and their supply modes, such as IEPE (Integrated Electronics Piezo-Electric), ICP (Integrated Circuit Piezoelectric), CCP (Constant Current Power), or CCLD (Constant Current Line Drive).
TEDS-Enabled Measurement Microphone Set
This set supports TEDS (Transducer Electronic Data Sheet) and is programmed according to the IEEE 1451.4 standard, complying with V1.0 format requirements. It is compatible with smart microphone technology, facilitating the integration and automated management of microphone information.
Calibration
Each measurement microphone set is calibrated at the factory using traceable calibration equipment and is supplied with a calibration certificate. Annual recalibration is recommended.
Quality and Warranty
All Aihua microphones feature second-generation alloy diaphragms, high-strength protective grids, and synthetic corundum insulators, making them highly stable and reliable measurement microphones. Compared to traditional nickel or stainless steel, these alloy diaphragms offer superior corrosion resistance, high-temperature stability, impact resistance, and specific strength. All microphones are assembled and tested in Class 1000 cleanrooms to ensure the highest quality. The measurement microphone cartridge comes with a one-year warranty, and we provide comprehensive after-sales support services.
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AWA14423-S04E 1/2”Free-field Measurement Microphone Set |
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Sound Field Type |
Free field |
Pressure Equalization |
Lateral pressure equalization |
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Diameter |
1/2 inch |
Operating Temperature (°C) |
-30 to +80 |
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Dimensions Standard (IEC 61094) |
WS2F |
Temperature Coefficient (dB/°C) (@250 Hz) |
-0.01 (-10°C to 50°C) |
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Power Supply |
IEPE（2 mA～20 mA） |
TEDS |
Standard |
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Sensitivity (mV/Pa) (@250 Hz ±2.0 dB) |
50 |
Static pressure coefficient (dB/kPa) |
-0.01 |
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Frequency Range (Hz) |
3.15～20k |
Output Voltage |
≥5 Vrms@24V Supply |
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Polarization Voltage (V) |
0 |
Output Impedance |
≤50 Ω |
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Dynamic Range |
17 dBA～135 dB |
Input Impedance/Capacitance |
≥10 GΩ/≤0.5 pF |
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Noise Floor (dBA) |
≤17 |
Output Connector |
BNC |
Frequency Response
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No.37 Xianxing Rd Xianlin Town Yuhang District Hangzhou Zhejiang China
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