Available Options

MX391/C Cardioid, Black
MX391/S Supercardioid, Black
MX391/O Omnidirectional, Black
MX391W/C Cardioid, White
MX391W/S Supercardioid, White
MX391W/O Omnidirectional, White

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.

Application

Conference/Installed

Stage Floor

Microphone Type

Condenser:

Lightweight, sensitive diaphragm. Precisely and smoothly captures sound nuances. Powered by battery or phantom power supply.

Polar Pattern

Cardioid:

Picks up the most sound in front of the microphone and some from the sides. Less susceptible to feedback in high volume environments.

OmniDirectional:

Equally sensitive to sound from all directions, but cannot be "aimed" to isolate one area.

SuperCardioid:

Screens unwanted sound sources. Ideal for individual instruments in a multi-microphone setting, or single sources in noisy environments.

Frequency Response

Tailored:

Smooth, extended response. Tuned to accentuate specific types of instruments or voices.

Form Factor

Boundary

Model Line

Microflex

Downloads
Microflex Microphones Product Brochure (PDF)
MX391 CAD Drawing (ZIP)
MX391 Specification Sheet (PDF)
MX391 User Guide (PDF)
Related Links
FAQ's for MX391, MX392, MX393
CommShield® Technology White Paper
RF and GSM Resistance
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
  • 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)

 

Specifications
Polar Pattern
Cardioid (MX391/C, MX391W/C) Supercardioid (MX391/S, MX391W/S) Omnidirectional (MX391/O, MX391W/O)
Frequency Response
50 to 17,000 Hz (Preamp Only)
lmpedance
180 ohms actual (rated at 150 ohms) (Preamp Only)
Output Level
-6 dBV (0.5 V), 12 dB at 0 gain (Preamp Only)
Phantom power required?
11 to 52 Vdc phantom, 2.0 mA current consumption (Preamp Only)
Accessories
Name Availability
C129

C129

Cable with CommShield® Technology, 3-Pin female mini-connector to male XLR, 12-foot (3.6 m), used with MX393 Microflex microphones.

RK100PK

RK100PK

In-Line Preamplifier for Microflex Microphones. Boosts resistance to Radio Frequency Interference (RFI).

R184

R184

Supercardioid cartridge for WL183, WL184, WL185 and all Microflex® MX183, MX202, MX391, MX392, MX393, MX405, MX410, MX415, MX412, and MX418 Microphones. White or Black.

R183

R183

Omnidirectional cartridge for all Microflex® MX183, MX202, MX391, MX392, MX393, MX405, MX410, MX415, MX412, MX418, and WL183 microphones. White or Black.