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Shure MX391/C Cardioid Condenser Boundary Microphone with 50 to 17,000 Hz Frequency Response, Black

SKU: SHMX391C MFR: MX391/C
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Key Features

  • Capture crystal-clear audio with this Shure boundary microphone, perfect for conference rooms.
  • Experience exceptional sound quality and clarity with its wide 50 Hz to 17 kHz frequency response.
  • Achieve pristine recordings with the cardioid polar pattern, minimizing unwanted background noise.
  • Enjoy durable performance with this Shure condenser microphone, built to last in any environment.
  • Ensure reliable connectivity using the included preamplifier for seamless integration with your system.
  • Benefit from low noise operation, capturing every nuance with a high signal-to-noise ratio of 71.4 dB.
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Reviews about this item

Review Summary

2017-06-25T15:59:44

Rated 5 out of 5

Good item for church

We had one of these for use on the communion table for some time and it works great. So when the goose-neck mic on a floor lectern went bad, we got a second one of these for a replacement. May just be from my limited experience, but it seems necessary to orient with the cord away from the speaker.

Rex P.

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Shure MX391/C Specifications

  • Transducer

    Condenser

  • Polar Pattern

    Cardioid

  • Frequency Response

    50 Hz to 17 kHz

  • Output Impedance (at 1000 Hz)

    180 ohms actual (rated at 150 ohms)

  • Open Circuit Sensitivity

    -29.6 dB (33.5 mV)

  • Maximum Sound Pressure Level

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

  • Signal to Noise Ratio

    71.4 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

    22.6 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

    42406051521

About Shure MX391/C

FEATURED REVIEWS

Good item for church

By Rex P.

We had one of these for use on the communion table for some time and it works great. So when the goose-neck mic on a floor lectern went bad, we got a second one of these for a replacement. May just be from my limited experience, but it seems necessary to orient with the cord away from the speaker.

Shure MX391/C 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.

Product Documents

User Manual

Key Features

  • Capture crystal-clear audio with this Shure boundary microphone, perfect for conference rooms.
  • Experience exceptional sound quality and clarity with its wide 50 Hz to 17 kHz frequency response.
  • Achieve pristine recordings with the cardioid polar pattern, minimizing unwanted background noise.
  • Enjoy durable performance with this Shure condenser microphone, built to last in any environment.
  • Ensure reliable connectivity using the included preamplifier for seamless integration with your system.
  • Benefit from low noise operation, capturing every nuance with a high signal-to-noise ratio of 71.4 dB.

What's in the box:

  • Shure MX391/C Cardioid Condenser Boundary Microphone
  • (RK183PK) Preamplifier (4-Pin Mini to XLR-3M)
  • Shure Warranty