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, Ext. Polarized
Pressure-field microphone designed for very high-frequency measurements in confined spaces with a frequency range of 6.5 Hz to 140 kHz.
TYPE 4144

1" Pressure-field Microphone, Ext. Polarized
Pressure-field microphone exceptionally suited for coupler and other laboratory type measurements over a frequency range of 2.6 Hz To 8 kHz.
TYPE 4145

1" Free-field Microphone, Ext. Polarized
Free-field microphone for low-level, laboratory, and sound pressure measurements (IEC 61672 Class 1) over a frequency range of 2.6 Hz To 18 kHz.
TYPE 4160

1" Laboratory Standard Microphone, Ext. Polarized
Laboratory standard microphone designed for extreme stability, perfectly suited as laboratory reference microphone over a frequency range of 2 Hz To 8 kHz.
TYPE 4176

1/2" Free-field Microphone, Prepolarized, 6.5 Hz - 12.5 kHz
Free-field microphone for sound level meter measurements (IEC61672 class 1 and ANSI S 1.4 Type 1) over a frequency response of 6.5 Hz To 12.5 kHz.
TYPE 4178

1/4" Sound Intensity Microphone Pair, Ext. Polarized
Our 100 kHz microphone pair for measuring sound intensity deliver high level and high-frequency measurements over a frequency range of 4 Hz to 100 kHz with phase-matched Type 4939 microphones.
TYPE 4180

1/2" Laboratory Standard Microphones, Ext. Polarized
Laboratory Standard Microphone designed for use as a reference microphone, delivering extreme stability over a frequency range of 1Hz to 20 kHz.
TYPE 4188

1/2" Free-field Microphone, Prepolarized, 8 Hz - 12.5 kHz
Free-field microphone for measurements in transport-noise measurements, architectural acoustics and electroacoustics over a frequency range of 8 Hz to 12.5 kHz.
TYPE 4189

1/2" Free-field Microphone, Prepolarized, 6.3 Hz- 20 kHz
Free-field microphone designed for general-purpose high-precision measurements, requirring high sensitivity over a frequency range of 6.3 Hz to 20 kHz.
TYPE 4190

1/2" Free-field Microphone, Ext. Polarized, 6.3 Hz - 20 kHz
Microphone designed for high-precision free-field measurements from 6.3 Hz to 20 kHz kHz with high sensitivity.<br>.
Type 4191

1/2" Free-field Microphone, Ext. Polarized, 3.15 Hz - 40 kHz
Free-field microphone for high-precision, free-field measurements with a wide frequency range/bandwidth of 3.15 Hz to 40 kHz.
TYPE 4192

1/2" Pressure-field Microphone, Ext. 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.
TYPE 4192-T

1/2" 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.
TYPE 4193

1/2" Infrasound / Low-frequency Microphone, Ext. Polarized
Low microphone (very low frequency microphone) designed for infrasonic measurements over a frequency range of 0.07 Hz to 20 kHz.
TYPE 4938

1/4" Pressure-field Microphone, Ext. Polarized
Pressure-field microphone for high-level and high-frequency measurements over a frequency range of 4 Hz to 70 kHz.
TYPE 4939

1/4" Free-field Microphone, Ext. Polarized
Free-field microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz to 100 kHz.
TYPE 4940

1/2" Free-field Microphone, Prepolarized, IEC 60651 Type 1
Free-field microphone for outdoor and industrial environment measurements (IEC 60651 Type 1) and frequency analysis measurements from 2 Hz to 20 kHz.
TYPE 4941

High-level Sound Pressure Microphone, Ext. Polarized
High Sound Pressure Microphone Type 4941 is designed for extremely high-level measurements such as gunshot, fireworks and rockets over the frequnency range of 4Hz to 20 kHz.
TYPE 4942

1/2" Diffuse-field Microphone, Prepolarized
Diffuse-field microphone cartridge specifically designed for random-incidence (diffuse-field) measurements over 6 hZ TO 16 kHz, and provides noise measurement in accordance with ANSI standards.
TYPE 4943

1/2" Diffuse-field Microphone, Ext. Polarized
Diffuse-field microphone intended for general, random-incidence measurements over 3.15 Hz TO 10 kHz, delivering noise measurements in accordance with ANSI standards.
TYPE 4944

1/4" Pressure-field Microphone, Prepolarized
Pressure-field microphone cartridge designed for high-level and high-frequency measurements over a frequency range of 4 Hz To 70 kHz.
TYPE 4947

1/2" 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.
TYPE 4950

1/2" Free-field Microphone, Prepolarized (IEC 6172 Class 1)
Free-field microphone designed for accurate sound measurements (IEC 61672 Class 1 and ANSI S 1.4 Type 1) over a frequency range of 6.5 Hz to 16 kHz.
TYPE 4953

1/2" 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.
TYPE 4954

1/4" Free-field Microphone, Prepolarized
Free-field microphone designed for high-level and high-frequency measurements over a frequency range of 4 Hz to 100kHz.
TYPE 4964

1/2" Infrasound Microphone, Prepolarized
Infrasound microphone specifically designed for high-precision, acoustic measurements with high sensitivity in the frequency range of 0.02 Hz to 20 kHz.
TYPE 4966

1/2" Free-field Microphone, Prepolarized, 5 Hz - 20 kHz
Free-field microphone designed for high‐precision and high sensitivity measurements with a frequency response of 5 Hz to 20 kHz.
TYPE 4971

1/2" 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.

Microphone Cartridges

SELECT YOUR Microphone

Type 4138

TYPE 4144

TYPE 4145

TYPE 4160

TYPE 4176

TYPE 4178

TYPE 4180

TYPE 4188

TYPE 4189

TYPE 4190

Type 4191

TYPE 4192

TYPE 4192-T

TYPE 4193

TYPE 4938

TYPE 4939

TYPE 4940

TYPE 4941

TYPE 4942

TYPE 4943

TYPE 4944

TYPE 4947

TYPE 4950

TYPE 4953

TYPE 4954

TYPE 4964

TYPE 4966

TYPE 4971