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MM1
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       Measurement Microphone

      The 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 loudspeaker 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.


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      * Linear frequency response
      * Omnidirectional polar pattern
      * Calibrated open circuit voltage
      * Narrow tubular construction


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      Transducer type
      Condenser (back electret)
      Operating principle
      Pressure
      Frequency response
      20 - 20,000 Hz (50 - 16,000 Hz ¡¾ 1.5 dB)
      Polar pattern
      Omnidirectional, diffuse field calibrated
      Open circuit voltage at 1 kHz (0dB = 1V/Pa)
      15 mV/Pa (¡Õ -36.5 dBV) ¡¾ 1 dB
      Nominal impedance
      330 ¥Ø
      Load impedance
      ¡Ã 2.2 k¥Ø
      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
      Connector
      3-pin XLR
      Length
      133 mm
      Shaft diameter
      19 mm
      Head diameter
      9 mm
      Weight without cable
      88 g





       

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