Microphone & PreAmplifier Combinations

Type 4189-L-001 ½-Inch Free-Field Microphone With Type 2669-L Preamplifier, 6 HZ TO 20 KHZ, Prepolarized
The Type 4189-L-001 is designed for high-precision free field measurements where a high sensitivity microphone is required.
SCENARIOS OF USE
- Precision sound measurement
- Premium Class Sound Level Meters
- Equipment in accordance with IEC 61672 class 1
THIS MICROPHONE IS A FACTORY COMBINATION OF:
- Microphone: Type 4189
- Preamplifier: Type 2669-L
The unit is assembled in a clean and sealed room environment, after which a unique type number and a unique serial number are assigned. This means that the combined unit has better accuracy and long term stability and is treated as a complete unit.
The drive also contains TEDS, which means that the serial number, type, and sensitivity information is stored in it.
THE BENEFITS OF USING A MICROPHONE PRE-AMPLIFIER COMBINATION ARE:
- Better stability and accuracy. Because the unit is mounted in clean room facilities, there is no contamination.
- Easy to use. Your front-end analyzer and software will automatically detect the type number, serial number and sensitivity because of the built-in TEDS technology. There is no need to manually enter this for all channels.
- Calibration integration. TEDS technology means that the microphone is automatically detected and identified by its data acquisition software, allowing it to be easily integrated into its calibration database.
- Less errors. Because your data acquisition software automatically knows the microphone type, serial number, and sensitivity, manual inputs are greatly reduced – reducing human error.
- Capacitance: pF
- Diameter: 1/2
- Dynamic range: 15.2 – 146 dB
- Frequency range: 6.3 – 20000 Hz
- Inherent noise: 15.2 dB A
- Lower limiting frequency -3dB: 6.3 Hz
- Optimised: Free field
- Polarization: Prepolarized
- Polarization voltages: V
- Pressure coefficient: -0.01 dB/kPa
- Sensitivity: 50 mV/Pa
- Standards: IEC 61094-4 WS2F
- Temperature coefficient: -0.006 db/ºC
- Temperature range: -20 – 80 C
- Venting: Rear
- Weight: gram
- Sound field: Free-field
- Input type: Classic
- Microphone type: Free field