½-inch prepolarized pressure-field microphone

Designed for measurements in small, closed couplers or close to hard, reflective surfaces. Type 4956 is suited for situations where a robust and stable pressure-field microphone is required.

Solicitar oferta

Type 4956 is designed for high-precision coupler measurements or ANSI noise measurements. Being prepolarized, Type 4956 can be used with a cost-effective CCLD input as well as a classical (Lemo-type) input.

USE SCENARIOS

Precision coupler measurements
Premium class ANSI sound level meters
General random incidence measurements
High humidity and high temperature measurements

POLARIZATION VOLTAGE

Being prepolarized, Type 4956 is especially well suited for battery operated equipment and in environments with high humidity levels.

TEDS MICROPHONES

Type 4956 is available in TEDS combinations with the CCLD Microphone Preamplifier Type 2671-W-001. 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 P 1451.4 version 0.9, but TEDS version 1.0 is available on request.

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Specifications

Capacitance: 13 pF
Diameter: 0.50
Dynamic range: 19 – 162 dB
Frequency range: 3 – 20000 Hz
Inherent noise: 18.6 dB A
Lower limiting frequency -3dB: 2.4 Hz
Optimised: Pressure Field
Polarization: Prepolarized
Polarization voltages: 0 V
Pressure coefficient: -0.0009 dB/kPa
Sensitivity: 12.5 mV/Pa
Standards: IEC 61094-4 WS2P
Temperature coefficient: 0.013 db/ºC
Temperature range: -30 – 70 C
Venting: Front
Weight: gram
Sound field: Pressure-field
Input type: CCLD IEPE
Microphone type: Pressure Field