Telex MCP90-8
8" Panel Mount Mic


The MCP-90 series microphones are phantom-powered "back-electret" miniature condenser gooseneck microphones. The back-electret feature provides greater sensitivity, wider frequency response, and superior immunity from handling noise than a diaphragm-electret microphone. The removable windscreen provides pop filtering; response shaping and overload protection to further enhance the acoustic performance of the microphone. The MCP-90 microphones are mechanically designed for quick, easy mounting to RTS® keypanels and selected Audiocom® intercoms. The frequency response is tailored for full-range sound reproduction with natural sound pick-up optimized for close-up use. The microphones are fitted with a threaded TRS male connector that is compatible with RTS® standard threaded TRS female connectors. The MCP-90 series is designed to be phantom powered with a wide voltage range of 1.5 to 9 VDC.


  • Generation Element: Dual condenser, back-electret
  • Frequency Response: 100 Hz to 15,000 Hz
  • Polar Patterns: Cardioid
  • Open Circuit Voltage: 4.5mV (-47 dB)/pascal @ 1 kHz
  • Power Level, 1 kHz (0 dB= 1 mW/ pascal): -44 dB
  • Dynamic Range: 102 dB
  • Output Impedance: Compatible with RTS® keypanels
  • Power Requirements: 1.5 to 9 VDC phantom supply
  • Current Consumption: <500 µA
  • Color: Nonreflecting black
  • Environmental Conditions:
    Relative Humidity 0-50%: -29° to 74°C (-20°to 165°F)
    Relative Humidity 0 to 95%: -29° to 57°C (-20° to 135°F)
  • Mounting: Male threaded TRS
  • Dimensions:
    Knurled Stem to Head Length: 203.2mm (8")
    Maximum HeadDiameter: 14 mm (0.55")
    Gooseneck Diameter: 6.4 mm (¼")
    Electronics Module Diameter: 20 mm (0.79")
  • Accessories Furnished: Specially designed windscreen to preventoverloading and distortion in normal operation.


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