½"" free-field microphone with Type 2671 preamplifier

TYPE 4189-A-021

½-inch Free-field Microphone With Type 2671 Preamplifier, Prepolarized

Free-field microphone designed for high-precision measurements, requiring high sensitivity with a frequency response of 20 Hz to 20 kHz.

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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

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Specifications

Capacitance: pF
Diameter: 1/2
Dyn. range: 16.5 – 134 dB
Freq. 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 ℃
Venting: Rear
Weight: gram
Sound field: Free-field
Input type: CCLD IEPE
Microphone type: Free field