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Beyerdynamic MM 1 Measurement Microphone 

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The Beyerdynamic MM 1 is a measurement microphone designed specifically for measuring sound reinforcement and PA systems. It is designed to work with...Click To Read More About This Product

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OVERVIEW

An ideal reference mic for measuring frequency response and sound pressure levels.

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

The MM 1 mic's narrow tubular construction ensures that the microphone has negligible influence on the sound field so that an increase in pressure level is avoided due to the linear frequency response.

Requires phantom power.

FEATURES
  • Linear frequency response
  • Omnidirectional polar pattern
  • Calibrated open circuit voltage
  • Narrow tubular construction
SPECIFICATIONS

MM 1 Measurement Microphone

  • 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 Ohms
    Load impedance: ? 2.2 k Ohms
    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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