Nicolas Kyvernitis Electronics Enterprises

MX391 C Boundary Microphone
NMK Original Products

Shure - MX391 C Boundary Microphone

Manufacturer warranty Download PDF

Item #: MX391/C
Categories: Install Microphones , Microphones
Brand: Shure

Microflex Boundary Microphone. Low profile, professional boundary microphone with interchangeable cartridges. In-lne preamp.

Equipped with features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators, Microflex Boundary Microphones are the high quality solution for a range of applications such as altars, boardrooms and distance learning centers. Every Microflex Boundary microphone features a choice of interchangeable condenser cartridges.

MX391: Includes attached 4 meter (12 ft) cable terminated with a 4-pin mini connector and separate preamplifier. A rubber strain relief is provided for applications that require removing the 4-pin mini connector and connecting the mic cable directly to screw terminals in the preamplifier.


-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 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)

MX391 C Boundary Microphone from Shure is 100% original and is available at NMK Electronics. Speak to our expert for booking a live demonstration. After sales customer service is an integral part of our business ethic and is taken very seriously.

Product Specifications

  • Maximum SPL: 118.8 dB SPL
  • Maximum SPL: 118.8 dB SPL
  • Polar Pattern :Cardioid
  • Frequency Range: 50 Hz to 17 kHz
  • Signal to Noise Ratio : 71.4 dB
  • Equivalent Noise Level: 22.6 dB A-Weighted

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