Microphone & PreAmplifier Combinations

Type 4189-L-001  ½-Inch Free-Field Microphone With Type 2669-L Preamplifier, 6 HZ TO 20 KHZ, Prepolarized

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