Microphone & PreAmplifier Combinations
Type 4189-A-021 ½-Inch Free-Field Microphone With Type 2671 Preamplifier, 20 HZ TO 20 KHZ, Prepolarized
Type 4189-A-021 is designed for high-precision, free-field measurements where a microphone with high sensitivity is required.
USE SCENARIOS
- Precision sound measurement
- Premium class sound level meters
- Equipment complying with IEC 61672 class 1
Capacitance: pF
Diameter: 1/2
Dynamic range: 16.5 – 134 dB
Frequency range: 20 – 20000 Hz
Inherent noise: 16.5 dB A
Lower limiting frequency -3dB: 12 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: CCLD IEPE
Microphone type: Free field
