Measurement Microphone M 372
The 1/4 ”electret measurement microphone M 372 is a sensor that can be connected directly to the analogue audio inputs of computers or mobile devices.
The class 1 frequency response according to IEC 61672, the extremely high sensitivity of 25 mV / Pa in this category and the 7 mm standard diameter are considered special advantages and are comparable to conventional measurement microphones. The electret capsule and preamplifier circuit form an inseparable unit in a cylindrical metal housing. The electrical connection of the measurement microphone is made via a Microdot connector and a corresponding adapter cable on a two- or four-pole 3.5mm jack plug.
The measurement microphone can be calibrated with the Pistonfon 5002 and common sound pressure calibrators using a 1/4 “adapter.
The conical shape of the microphone holder MH 64 for a diameter of 7 mm and the windshield W 3 are recommended as optional accessories.
|Converter type||Electret pressure receiver|
|Frequency range||20 Hz to 20 kHz class 1 free field|
|Phase rotation||180 °|
|Idle transmission coefficient||25 mV / Pa (f = 1 kHz, UB = 5 V DC, RV = 4.7 kOhm)|
|No-load transfer rate||-32 dB ± 3.0 dB re 1V / Pa|
|Limit sound pressure level||for 3% harmonic distortion at 1 kHz||108 dB (max.SPL for THD ≤ 3% at 1 kHz, UB = 1.8 V DC, RV = 2.5 kOhm)|
|Equivalent noise level DIN EN 60651||28 dB A|
|Operating current||0.25 mA DC|
|No-load supply voltage||1.5 V DC to 12 V DC|
|Working temperature range||-20 ° C to +70 ° C|
|Connectors||MALCO Microdot 10 – 32 UNF – 2 A|
|diameter||Ø 7 mm|