• Shure MX391/O Microflex Boundary Microphone
  • Shure MX391/O Microflex Boundary Microphone Alternate
1 2

Shure MX391/O Microflex Boundary Microphone

Shure MX391/O Microflex Boundary Microphone

SoundPro Item: 23508 | Part Number: Shure MX391/O

$252.00
$352.00 $252.00
Your Price Sold out
MSRP: $352.00 | MAP: $252.00

In stock and ready to ship

  • 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
Log in or register for YOUR best price

Shure MX391/O Microflex boundary microphone features programmable, silent membrane switches, logic inputs and outputs, LED indicators, and more. 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.

View full details
  • Transducer TypeCondenser
  • Polar PatternOmnidirectional
  • Frequency Response50 Hz - 17 kHz
  • Rated Output Impedance150 ohms (180 ohms actual)
  • Sensitivity-21.8 dB (81.4 mV)
  • Max. SPL (1 kHz at 1% THD, 1 kΩ load; All settings +6 dB at 0 gain (internal modification))117.5 dB
  • Equivalent Output Noise (A-weighted)14.5 dB SPL
  • Signal-to-Noise Ratio (referenced at 94 dB SPL at 1kHz)72.7 dB SPL
  • Dynamic Range (1kohms load at 1kHz)96.2 dB
  • Preamp Output Clipping Level (1% THD)-6dBV (0.5V)
  • Power Requirements11-52 VDC phantom, 2.0mA

Why Choose SoundPro?

Since 1973, SoundPro has been the trusted source for audio, video, and lighting gear. Whether you're starting your AVL journey or are a seasoned professional, we're here to help you every step of the way.

Start Shopping

  • Certified Account Managers

    Our Account Managers, with 16+ industry certifications, are ready to find your solution.

  • Personalized Pricing

    We know every project is unique. Get a personalized quote anytime you need it

  • Fast Shipping & Local Pickup

    In stock items ship same day if ordered by 4pm CST. Pickup offered in Irving, TX.

  • Accountability from Real People

    We aim for a smooth, transparent experience by setting and sticking to clear expectations.

  • Easy Payments & Financing

    We accept all major credit cards and also offer financing through our partners.

1 2