Shure MX391/O
Omnidirectional Boundary Microphone with 12 ft cable


The Shure MX391 features the low-profile design of the MX393 at half the size. The smooth, wide frequency response and high sensitivity are perfect for boardrooms, altars and courtrooms. Other features include interchangeable capsules, dent resistant steel grilles, mounting holes, bottom cable exit and attached 12' cable and preamp. MX391 requires phantom power.

Shure MX391/O Features:

  • Flat frequency response across the vocal range for uncolored sound
  • Interchangeable cardioid, supercardioid, and omnidirectional cartridges that provide optimal choice for each application
  • Sleek, low-profile design for unobtrusive appearance
  • Balanced, transformerless output for increased immunity to noise over long cable runs

Shure MX391/O Specifications:

  • Polar Pattern: Omnidirectional
  • Frequency Response: 50Hz to 17kHz
  • Output Impedance: 180 ohms actual (rated at 150 ohms)
  • Maximum SPL: 110.7 dB
  • Signal to Noise Ratio: 79.5 dB
  • Dynamic Range: 96.2 dB
  • Power Requirements: 11 to 52 Vdc phantom
  • Cable: 12 foot (4 meter) Attached Cable to 4-Pin Mini Connector (TA4F)
  • Accessories Included: Zipper bag, In-Line Preamp, Hex Wrench #4
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