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Shure MX391/S Microflex Boundary Microphone
Shure MX391/S Microflex Boundary Microphone
$229.00

Shure MX391/S Microflex Boundary Microphone

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SoundPro Item: 23509
MPN: Shure MX391/S
MSRP: $320.00
$229.00
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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.

Shure MX391/S 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
  • MX391/S Microflex boundary microphone1
  • 12 ft cable with 4-pin mini connector and in-line preamp1
  • Rubber strain relief1
  • Transducer TypeCondenser
  • Polar PatternSupercardioid
  • Frequency Response50 Hz - 17 kHz
  • Rated Output Impedance150 ohms (180 ohms actual)
  • Sensitivity-28.3 dB (38.5 mV)
  • Max. SPL (1 kHz at 1% THD, 1 kΩ load; All settings +6 dB at 0 gain (internal modification))110.7 dB
  • Equivalent Output Noise (A-weighted)21.3 dB SPL
  • Signal-to-Noise Ratio (referenced at 94 dB SPL at 1kHz)79.5 dB SPL
  • Dynamic Range (1kΩ load at 1kHz)96.2 dB
  • Preamp Output Clipping Level (1% THD)-6dBV (0.5V)
  • Power Requirements11-52 VDC phantom, 2.0mA

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