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Crown Audio MB1 Mini-Boundary Microphone

Crown Audio MB1 Mini-Boundary Microphone


Our Price : $146.99

Product Code: 505335


Just 1.3 in. wide!

The Crown® MB-1 is a miniature boundary microphone for multi-miking applications such as teleconferencing, distance learning, boardrooms, and courtrooms. A low-profile circular microphone, the MB-1 has a bottom-mounted phone plug. Supplied with the mic is a table insert with a phone jack that accepts the mic. The insert flush-mounts in a hole drilled in the table. After meetings, the mic can be removed and the insert covered with the provided disk.

Thanks to its half-supercardioid pickup pattern, the MB-1 greatly reduces ambient noise and pickup of room reverberation. The result is a clearer sound. The MB-1 must be used with an MB-100 or MB-200 interface (not included). The interface performs these functions:
• Powers and equalizes up to four mics.
• Provides programmable switching to turn
the mic on or off if desired (switches not provided).
• The MB-200 interface also has remote switch sensing via an optical coupler.
• Pluggable microphone inputs.
• Provides balanced outputs from the interface.

MB-1 Features
• Painted removable grille assembly.
• Miniature mic plugs into jack in table insert.
• Clean, clear, natural sound.
• Low-Z balanced output prevents hum and high-frequency loss.
• Defeatable LED.

  • Perfect for multimiking applications in teleconferencing, distance learning, boardrooms and courtrooms
  • Phase Coherent Cardioid® design prevents coloration from surface sound refl ections
  • Half-supercardioid polar pattern reduces ambient noise and room reverberation
  • Very small and inconspicuous
  • Mic plugs into an insert in the table

  • All specs apply to each output of the interface with a mic connected.
  • Type: Phase Coherent Cardioid.
  • Element: Electret condenser.
  • Frequency response (typical): 50 Hz to 15,000 Hz at 30 degrees incidence to surface
  • Polar pattern: Half-supercardioid (supercardioid in the hemisphere above the primary boundary).
  • Impedance: 150 ohms, balanced. Recommended load impedance 1000 ohms or greater.
  • Open-circuit sensitivity (typical): 22 mV/Pa* (–33 dB re 1 volt/Pa).
  • Power sensitivity: –30.5 dB re 1 mW/Pa.* EIA rating –125 dBm.
  • Equivalent noise level (self-noise): 22 dB SPL typical (0 dB=0.0002 dyne/cm2), A-weighted.
  • S/N ratio: 72 dB at 94 dB SPL.
  • Maximum SPL: 120 dB SPL at 3% THD

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