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Shure MX393/O Low Profile Professional Omnidirectional Boundary Condenser Microphone

  • Our Price
  • $254.00
  • Regular price MSRP: $331.00


Get Versatile And Reliable Audio Feed With The Shure MX393/O Low Profile Professional Omnidirectional Boundary Condenser Microphone

MX393 Microflex Wired Boundary Microphones from Shure are equipped with features like programmable, silent membrane switches, logic inputs and outputs, and green LED indicators. The high-quality solution for a range of applications such as altars, boardrooms and distance learning centers, Microflex Boundary microphones feature interchangeable condenser cartridges.

The MX393 is a surface-mount mic; LED logic input/switch logic output terminals, screw terminal connections, detachable cable with XLR output connector.

  • 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
  • Programmable membrane on/off switch plus LED on/off indicator


  • Cartridge Type: Electret Condenser
  • Frequency Response: 50 - 17000 Hz
  • Polar Pattern: Omnidirectional
  • Output Impedance: 180 ohms
  • Output Configuration: Active Balanced
  • Sensitivity @ 1 kHz, open circuit voltage: 22 dBV/Pa (1 Pa=94 dB SPL)
  • Maximum SPL, 1 kHz at 1% THD, 1 k ohm load: Omnidirectional: 111 dB
  • Equivalent Output Noise, A-weighted: 15 dB SPL
  • Signal-to-Noise Ratio, Ref. 94 dB SPL at 1 kHz: 80 dB
  • Dynamic Range: 1 k ohm load, @ 1 kHz: 96 dB
  • Common Mode Rejection, 10 Hz to 100 kHz: 45 dB, minimum
  • Preamplifier Output Clipping Level at 1% THD: 6 dBV (0.5 V)
  • Polarity: Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector
  • Mute Switch, 50 - 20000 Hz: 50 dB minimum
  • Logic Connections:
    • LED IN: Active low (1.0V), TTL compatible. Absolute maximum voltage: -0.7V to 50V
    • LOGIC-OUT: Active low (0.5V), sinks up to 20mA, TTL compatible. Absolute maximum voltage: -0.7V to 24V (up to 50V through 3k)
  • Cable: 3 m (12 ft) detachable cable with 3-pin audio connector
  • Environmental Conditions:
    • Operating Temperature: 18-57C
    • Relative Humidity: 0-95%
  • Power Requirements: 11 V DC, 2.0 mA

All measurements taken with microphone mounted on a wooden surface (76 x 76 cm)

Manufacturer: Shure
Model: MX393/O
SKU: I059797-21-WHXC

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