TYPE 4959

Short 20 kHz microphone for handheld arrays

Designed for use in Brüel & Kjær’s hand-held and foldable arrays.

見積もり依頼

Array Microphone Type 4959 is a ¼" prepolarized microphone specially designed for use in Brüel & Kjær’s hand-held and foldable arrays.

USE SCENARIOS

  • In Brüel & Kjær hand-held and foldable arrays

Type 4959 microphones have good, stable amplitude and phasematching over wide ranges of temperature and humidity. Their  frequency response is optimised for a flat response in a pressure field.

Each microphone’s built-in TEDS (Transducer Electronic Data Sheet) contains information about the complex transfer function, enabling applications to use data for individual transducers, resulting in more precise measurements.

The preamplifier is an industry standard DeltaTron (constant current line drive) type, allowing the use of the same coaxial cable for signal, power supply and TEDS.

A rugged protection grid provides an integrated heat shield. The microphone is front-vented for pressure equalization.

Capacitance
pF
Diameter
¼
Dynamic range
32 – 134 dB
Frequency range
50 – 20000 Hz
Inherent noise
32 dB A
Lower limiting frequency -3dB
Hz
Optimised
Array
Polarization
Prepolarized
Polarization voltages
V
Pressure coefficient
dB/kPa
Sensitivity
11.2 mV/Pa
TEDS UTID
I27-0-0-1U
Temperature coefficient
db/ºC
Temperature range
-10 – 55 C
Venting
Front
Weight
3 gram
Sound field
Special
Input type
CCLD IEPE
Microphone type
Array