1/2" Free-field Microphone With Type 2669-L Preamplifier, Prepolarized

Type 4189-L-001 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 according to IEC 61672 class 1

THIS MICROPHONE SET IS A COMBINATION OF:

• Microphone Type 4189
• Preamplifier Type 2669-L

The unit is mounted in a clean, sealed room environment, after which a single type number and a single serial number are assigned. This means that the combined unit has better accuracy and long-term stability and is treated as a complete unit.

The unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored in it.

THE BENEFITS OF USING A MICROPHONE PREAMPLIFIER COMBINATION ARE:

• Better stability and accuracy. Because the unit is mounted in clean room installations, there is no contamination.
• Easy to use. Your front-end analyzer and software will automatically detect the type number, serial number and sensitivity because of the built-in TEDS technology. There is no need to enter this manually for all channels.
• Calibration integration. TEDS technology means that the microphone is automatically detected and identified by your data acquisition software, allowing it to be easily integrated into your calibration database.
• Fewer errors. Since your data acquisition software automatically knows the type of microphone, serial number and sensitivity, manual inputs are greatly reduced - reducing human errors.