Stock #64379-5
Out of StockUsed and in Excellent Condition
4189-A-021 Bruel & Kjaer 1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination
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Item details
| Part Number | 4189-A-021 |
|---|---|
| In Stock | 2 |
| Available | Today |
| Location | Champaign, IL USAships worldwide |
| Stock # | 50394-1 |
| Ship Weight | 1 lbs /ea |
| Condition | Used and in Excellent Condition |
| Inspection | Before every shipment |
| Warranty | 1-Year Warranty with 30-Day Return Guarantee |
Description
Includes:
• Storage Case
• Storage Case
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Bruel & Kjaer 4189-A-021 1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination Overview
Features:
- Sensitivity: 50 mV/Pa
- Frequency: 6.3 Hz - 20 kHz
- Dynamic Range: 14.6 - 146 dB
The Bruel & Kjaer 4189 Series 1/2" Prepolarized Free-Field Microphone is designed for high-precision, free-field
measurements where a microphone with high sensitivity
is required. Being prepolarized, the 4189 can be used
with both DeltaTron and classical preamplifiers.
At higher frequencies, reflections and diffractions causes a pressure increase in front of the diaphragm of a microphone. If not corrected, for this would result in an increased output voltage. A free-field optimization means that the frequency response of the microphone has been designed in such a way that the free-field response at 0 degrees incidence is flat. This microphone is optimized for use with the protection grid in place.
Free-field microphones are commonly used for sound measurement in an anechoic chamber or far away from reflecting buildings, etc. Another area for free-field microphones is for general electroacoustic measurements purposes like loudspeaker and microphone measurements.
The 4189 Series is suited for use in class 1 Sound Level Meters and for all high-precision acoustic measurements where a robust and stable free-field microphone with an upper frequency of 20 kHz is required.
A press-fitted, stainless-steel diaphragm ensures superior long-term stability and mechanical robustness - 4189 Series will withstand the 1 m drop test of IEC 60068-2-32.
All Bruel & Kjaer Measuring Microphones are assembled in a clean room. This ensures that the microphones maintain their inherent low noise floor and high stability, even when used in environments with a combination of high humidity and high temperature.
Being prepolarized, the 418 Series is especially well suited for battery operated equipment and operation in environments with high humidity
The 4189 Series is manufactured in TEDS combinations with either classical or DeltaTron type preamplifier. The TEDS microphone is considered one unit and has been sealed in a clean environment. The TEDS is programmed with the loaded sensitivity of the actual cartridge and the data is therefore readily available. The default TEDS template is to IEEE P1451.4.
At higher frequencies, reflections and diffractions causes a pressure increase in front of the diaphragm of a microphone. If not corrected, for this would result in an increased output voltage. A free-field optimization means that the frequency response of the microphone has been designed in such a way that the free-field response at 0 degrees incidence is flat. This microphone is optimized for use with the protection grid in place.
Free-field microphones are commonly used for sound measurement in an anechoic chamber or far away from reflecting buildings, etc. Another area for free-field microphones is for general electroacoustic measurements purposes like loudspeaker and microphone measurements.
The 4189 Series is suited for use in class 1 Sound Level Meters and for all high-precision acoustic measurements where a robust and stable free-field microphone with an upper frequency of 20 kHz is required.
A press-fitted, stainless-steel diaphragm ensures superior long-term stability and mechanical robustness - 4189 Series will withstand the 1 m drop test of IEC 60068-2-32.
All Bruel & Kjaer Measuring Microphones are assembled in a clean room. This ensures that the microphones maintain their inherent low noise floor and high stability, even when used in environments with a combination of high humidity and high temperature.
Being prepolarized, the 418 Series is especially well suited for battery operated equipment and operation in environments with high humidity
The 4189 Series is manufactured in TEDS combinations with either classical or DeltaTron type preamplifier. The TEDS microphone is considered one unit and has been sealed in a clean environment. The TEDS is programmed with the loaded sensitivity of the actual cartridge and the data is therefore readily available. The default TEDS template is to IEEE P1451.4.
The Bruel & Kjaer 4189-A-021 1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM).
1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination Price & Specs
Bruel & Kjaer 4189-A-021 1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination Description
Functions
Free-field condenser microphone system designed for precision acoustic measurements in unobstructed sound fields. Features integrated TEDS (Transducer Electronic Data Sheet) capability for automatic sensor recognition and calibration data storage. Operates with external power supply through coaxial cable connection. Provides high-sensitivity, low-noise signal conditioning for sound pressure level measurements, frequency response analysis, and environmental noise monitoring. Compatible with sound level meters, data acquisition systems, and acoustic analyzers. Typical applications include noise compliance testing, audio equipment characterization, and environmental acoustic surveys.
This section includes content generated with the assistance of artificial intelligence (AI) tools. AI is used to increase efficiency and provide timely information. Please note that the content may not have been reviewed for accuracy or completeness. Use this information at your own discretion, and verify details independently as needed.
Bruel & Kjaer 4189-A-021 1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination Manuals, Datasheets, Drivers, Links
Bruel & Kjaer 4189-A-021 1/2" Free-Field Microphone with 2671 Preamplifier TEDS Combination Specs
| General | |
|---|---|
| Manufacturer | Bruel & Kjaer |
| Model | 4189-A-021 |
| Condition | Used and in Excellent Condition |
| Product Family | 4189 Series, 4189-A-021 |
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Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Artisan Scientific Corporation dba Artisan Technology Group is not affiliated with or a distributor for Bruel & Kjaer. The depiction, description, or sale of products featuring names, trademarks, brands, and logos is for identification and/or reference purposes only and does not indicate any affiliation with or authorization by any rights holder.
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