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1/2inch, Pressure, 20kHz, TEDS

M 673+A 832

  • 1/2inch, Pressure, 20kHz, TEDS

  • The M 673+A 832 is an IEPE 1/2 inch prepolarized pressure field measurement microphone, which is generally used to measure the acoustic performance of products located in the coupling cavity. The main part is made of stainless steel so that it has good toughness and long time stability.


    The M 673+A 832 has a TEDS function, which makes the use of the microphone more convenient and fast. When using multiple microphone arrays, it can be quickly calibrated.


    The M 673+A 832 is positioned as a cost-effective microphone designed specifically for audio production line testing of multimedia products. With MegaSig PM 0083 and other IEPE signal conditioner to achieve the best test results.


  • Description
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Description

Specifications

ParameterValue
TEDS FunctionYes
Dimensions1/2inch
Sound Field TypePressure field
Polarization Voltage0V（Pre-polarized）
Frequency Response3.15Hz – 20kHz ± 2dB 12.5Hz – 10kHz ± 1dB
Dynamic Range26dB（A）-147dB（1000 Hz THD <3%）
Noise Floor26dB（A）
Sensitivity mV/Pa (dBV/Pa)12.5mV (-38.0dB) ± 2dB
IEC 61094-4 TypeWS2P
Maximum Output Voltage5.6V
Output Impedance<50Ω
Supply Power2mA - 10mA（Typical4mA）
Pressure Equalization MethodPost-equalization
Connector TypeBNC
Operating Temperature-30°C to 85°C
Temperature Coefficient-0.012dB/℃
Humidity Coefficient＜0.1dB（0-90% no condensation）
Relative Humidity0-90% no condensation
Static Pressure Coefficient-0.01dB/kPa

Dimensions

Overall length

80.4mm

Diarmete

13.2mm

Diameter (excluding protective grille)

12.7mm

Preamplifier mating threads

11.7mm - 60UNS

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The measuring microphones we produce are precision sensors, and all aspects related to production are strictly controlled, including material selection, production processes, testing control, and production environment.

图片1.pngAfter years of continuous improvement, we now use special nickel alloy materials as the core material for the diaphragm. Compared to other alloy materials, it exhibits higher sensitivity, lower distortion rate, and more stable long-term performance. The front body of the microphone is made of stainless steel, ensuring that the entire microphone maintains extremely robust structural characteristics even under various assembly conditions.

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We adopt advanced production processes and fully automated precision machining equipment, which significantly reduces the accuracy errors caused by secondary clamping in traditional machining equipment. This greatly enhances the dimensional consistency, geometric accuracy, and overall quality stability of the products, providing reliable technical support for demanding application scenarios.

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At the same time, we employ extremely rigorous testing and control measures, conducting quantitative testing on any links that may lead to product quality issues, and implementing test sequence control to prevent skip-station situations. The comprehensive MES control enables all data to be traceable, ensuring a high degree of consistency in sensor quality.

图片4.pngThe entire production process of all our microphones is strictly carried out in a dust-free workshop, which can minimize the amount of dust in the air, thus creating a stable and pure working environment for the sensors. This ensures a long and stable lifespan for the sensors and maintains their excellent performance throughout daily use.


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