Shure MX391W/S Supercardioid Condenser Boundary Microphone, White
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Shure MX391W/S Supercardioid Condenser Boundary Microphone, 50 to 17,000 Hz Frequency Response, White

SKU: SHMX391WS

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Shure MX391W/S Specifications

  • Transducer

    Condenser

  • Polar Pattern

    Supercardioid

  • Frequency Response

    50 Hz to 17 kHz

  • Output Impedance (at 1000 Hz)

    180 ohms actual (rated at 150 ohms)

  • Open Circuit Sensitivity

    -28.3 dB (38.5 mV)

  • Maximum Sound Pressure Level

    117.5 dB(1 kHz at 1% Total Harmonic Distortion, 1 k ohm load)

  • Signal to Noise Ratio

    72.7 dB (referenced at 94 dB SPL)

  • Environmental Requirements

    Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)
    Relative Humidity: 0 to 95%

  • Equivalent Output Noise

    21.3 dB SPL (A-weighted)

  • Dynamic Range at 1 k ohm Load

    96.2 dB
    100 dB at 0 gain

  • Common Mode Rejection

    45 dB minimum, 10 Hz to 100 kHz

  • Preamplifier Output Clipping Level

    -6 dBV (0.5 V)
    12 dB at 0 gain

  • Polarity

    Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output connector

  • Power Requirements

    11 to 52 Vdc phantom
    2.0 mA current consumption

  • Dimensions( L x W x H)

    3.126 x 2.088 x 0.750" (7.940 x 5.304 x 1.905cm)

  • Weight

    Microphone: 4.16 oz. (117.9 g)
    RK183PK Pre-Amplifier: 3.21 oz. (91 g)

  • UPC Code

    42406051415

About Shure MX391W/S

The Shure MX391W/S is a supercardioid miniature white condenser boundary microphone with an in-line preamp, a 12 ft (4 m) attached cable that terminates to a 4-pin mini connector. It is equipped with features like programmable, silent membrane switches, logic inputs and outputs and LED indicators. It is a high-quality solution for a range of applications such as altars, boardrooms and distance learning centers.

Shure MX391W/S Features

  • Flat frequency response across the vocal range for uncolored sound
  • Sleek, low-profile design for unobtrusive appearance
  • Balanced, transformerless output for increased immunity to noise over long cable runs
  • Programmable on/off switch and LED on/off indicator (MX392/MX393 models only)
  • LED logic input and switch logic output terminals for remote control or use with automatic mixers (MX392 models only)

Warranty Information

This product has a limited warranty of 24 months.

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Product Documents

User Manual

Key Features

  • Flat frequency response across the vocal range
  • Sleek, low-profile design for unobtrusive appearance
  • Balanced, transformerless output
  • Programmable on/off switch and LED on/off indicator (MX392/MX393 models only)
  • LED logic input and switch logic output terminals

What's in the box:

  • Shure MX391W/S Supercardioid Condenser Boundary Microphone
  • (RK183PK) Preamplifier (4-Pin Mini to XLR-3M)
  • Shure Warranty