Microphone Cartridges

Brüel & Kjær microphone cartridges are suited for a wide range of measurement applications. Four types of microphones define the sound field and adaptability for specific environments, industries, and measurement conditions, and are referred to as free-field, pressure-field, diffuse-field, and special microphones. B&K microphone cartridges are supplied in 1 inch, 1/2 inch, 1/4 inch or 1/8 inch diameter size, and require a microphone preamplifier.

Type 4138

1/8" Pressure-field Microphone, Externally Polarized

Pressure-field microphone designed for very high-frequency measurements in confined spaces with a frequency range of 6.5 Hz to 140 kHz.
- Dyn. range : 43 – 168 dB
- Freq. range : 6.5 – 140000 Hz
- Polarization : Ext polarized
- Sensitivity : 1 mV/Pa
- Standards :
TYPE 4144

1-inch Pressure-field Microphone, Externally Polarized

Pressure-field microphone exceptionally suited for coupler and other laboratory type measurements over a frequency range of 2.6 Hz To 8 kHz.
- Dyn. range : 11 – 146 dB
- Freq. range : – Hz
- Polarization : Ext polarized
- Sensitivity : mV/Pa
- Standards :
TYPE 4192

½-inch Pressure-field Microphone, Externally Polarized

Pressure-field microphone designed for high-precision coupler measurements or ANSI noise measurement over a frequency range of 3.15 Hz to 20 kHz.
- Dyn. range : 19 – 162 dB
- Freq. range : 3.15 – 20000 Hz
- Polarization : Ext polarized
- Sensitivity : 12.5 mV/Pa
- Standards : IEC 61094-4 WS2P
TYPE 4192-T

½-inch Transfer Standard Microphone, Ext. Polarized

Transfer standard microphone designed for use in laboratory applications requirring a frequency range of 3.15 Hz to 20 kHz.
- Dyn. range : 19 – 162 dB
- Freq. range : 3.15 – 20000 Hz
- Polarization : Ext polarized
- Sensitivity : 12.5 mV/Pa
- Standards :
TYPE 4938

1/4-inch Pressure-field Microphone, Externally Polarized

Pressure-field microphone for high-level and high-frequency measurements over a frequency range of 4 Hz to 70 kHz.
- Dyn. range : 30 – 172 dB
- Freq. range : 4 – 70000 Hz
- Polarization : Ext polarized
- Sensitivity : 1.6 mV/Pa
- Standards : IEC 61094-4 WS3P
TYPE 4944

1/4" Pressure-field Microphone, Prepolarized

Type 4944 is a ¼-inch Prepolarized Pressure-field Microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz To 70 kHz.
- Dyn. range : 30 – 170 dB
- Freq. range : 4 – 70000 Hz
- Polarization : Prepolarized
- Sensitivity : 0.9 mV/Pa
- Standards : IEC 61094-4 WS3P
TYPE 4947

½-inch Pressure-field Microphone, Prepolarized, 8 Hz – 10 kHz

Pressure-field microphone designed for coupler measurements in connection with telephone and hearing aid testing over a frequency range of 8 Hz To 10 kHz.
- Dyn. range : 17.5 – 160 dB
- Freq. range : 8 – 10000 Hz
- Polarization : Prepolarized
- Sensitivity : 12.5 mV/Pa
- Standards :
TYPE 4953

½-inch Pressure-field Microphone, Prepolarized, 3 Hz – 10 kHz

Pressure-field microphone designed for coupler measurements and in-cabin measurements (complying to ANSI standards) over a frequency range of 3 Hz to 10 kHz.
- Dyn. range : 16 – 146 dB
- Freq. range : 3 – 10000 Hz
- Polarization : Prepolarized
- Sensitivity : 50 mV/Pa
- Standards :
TYPE 4971

½-inch Pressure-field Microphone, Prepolarized, 5 Hz – 20 kHz

Pressure-field microphone for precision coupler measurements, random incidence, and free-field measurements with 90°C incidence over a frequency range of 5 Hz to 20 kHz.
- Dyn. range : 19 – 162 dB
- Freq. range : 5 – 20000 Hz
- Polarization : Prepolarized
- Sensitivity : 12.5 mV/Pa
- Standards : IEC 61094-4 WS2P

Microphone Cartridges

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