AcSoft
Svantek UK

Measurement Microphone M 373

The M 373 1/4 ”electret measurement microphone is a sensor that can be connected directly to the signal inputs with 48 V phantom power that is common in audio measurement technology. Typical applications are room acoustic measurements or the calibration of public address systems.

Microtech Gefell

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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 the preamplifier circuit form an inseparable unit. The electrical connection of the measurement microphone is made via an XLR connector.

The measurement microphone can be calibrated with the Pistonfon 5002 and common sound pressure calibrators using a 1/4 “adapter.

The MH 22 microphone holder and the W 3 windshield are recommended as optional accessories.

Converter typeElectret pressure receiver
CharacteristicBullet
Frequency range20 Hz to 20 kHz class 1 free field
Idle transmission coefficient25 mV / Pa ± 2.5 dB
Limit sound pressure levelfor 1% harmonic distortion at 1 kHz132 dB (max.SPL, THD ≤ 1% at 1 kHz, RL = 1 kΩ)
Limit sound pressure level for 3% harmonic distortion at 1 kHz138 dB (max.SPL, THD ≤ 3% at 1 kHz, RL = 10 kΩ)
Equivalent noise level DIN EN 6065128 dB A (RL = 1 kOhm)
Operating current7 mA
No-load supply voltageP 48V ± 4V
Working temperature range-20 ° C to +70 ° C
Memory for microphone identification256 Bit 1 – Wire TM EEPROM (via IEEE 1451.4 TEDS editor)
Connectors3-pin XLR plug, gold-plated contacts
diameterØ 21 mm
length130 mm

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