TYPE 4189
½-inch 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.
견적 요청하기A general-purpose workhorse designed for high-precision, free-field measurements with high sensitivity. Our best-selling microphone for 15 years because it produces the best results in its class, and will keep doing so for decades to come, with both CCLD and classical preamplifiers.
Universally useful in almost every measurement scenario, it is especially well suited for battery operated equipment – which is why it is fitted as standard to some of our world-leading sound level meters. Our best-seller for typical electroacoustic measurements like loudspeaker and microphone measurements, because it has earned our customers' trust over many years.
USER SCENARIOS
- Precision sound measurement
- Premium class sound level meters
- Equipment complying with IEC 61672 class 1
- Capacitance
- 14 pF
- Diameter
- ½
- Dyn. range
- 14.6 – 146 dB
- Freq. range
- 6.3 – 20000 Hz
- Inherent noise
- 14.6 dB A
- Lower limiting frequency -3dB
- 4 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
- -30 – 150 C
- Venting
- Rear
- Weight
- gram
- Sound field
- Free-field
- Microphone type
- Free field
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