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Beyerdynamic Mm 1 Omni Condenser Measurement Microphone


Product Description

The Beyerdynamic MM 1 is a measurement microphone which has been designed specifically for measuring sound reinforcement and PA-systems. It is designed to work with spectrum analysers for measuring frequency response and sound pressure levels of loud speaker systems. The MM 1 is the ideal microphone for the measurement of audio signals in the research, development, for reverberation testings and other applications.

The narrow tubular construction ensures that the microphone has negligable influence on the sound field so that an increase in sound pressure is avoided with high frequencies. A natural reproduction is achieved due to the linear frequency response.


Beyerdynamic Mm 1 Features:


  • Linear Frequency Response
  • Omnidirectional Polar Pattern
  • Calibrated Open Circuit Voltage
  • Narrow Tubular Construction


Beyerdynamic Mm 1 Specifications:


  • Transducer type: Condenser (back electret)
  • Operating principle: Pressure
  • Polar pattern: Omnidirectional, diffuse field calibrated
  • Open circuit voltage at 1 kHz (0dB = 1V/Pa): 15 mV/Pa( = -36.5 dBV) ± 1 dB
  • Nominal impedance: 330 ohm
  • Load impedance: = 2.2 kohm
  • Connector: 3-pin XLR
  • Length: 133 mm
  • Shaft diameter: 19 mm
  • Head diameter: 9 mm
  • Weight without cable: 88 g
  • Frequency response: 20 - 20,000 Hz (50 - 16,000 Hz ±1.5 dB)
  • Max. SPL at 1 kHz: 128 dB
  • S/N ratio rel. to 1 Pa: > 57 dB
  • A-weighted equivalent SPL: approx. 28 dB(A)
  • Power supply: 12 - 48 V phantom power
  • Current consumption: approx. 3.4 mA

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