Shure MX391W-A/O Microflex Condenser Boundary Microphone (White, Omnidirectional)
Availability:
Special Order ItemThis item is not stocked and needs to be ordered from the manufacturer. Please contact our sales team for more information.
Description
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.
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)
| Polar Pattern | Supercardioid (MX391/S, MX391W/S) |
| Environmental Requirements | |
| Operating Temperature Range | -18 to 57 degrees C (0 to 135 degrees F) |
| Relative Humidity | 0 to 95% |
| Frequency Response | 50 to 17,000 Hz |
| Output Impedance (at 1000 Hz) | 180 ohms actual (rated at 150 ohms) |
| Open Circuit Sensitivity 1 kHz ref. 1 V per Pascal * | Omnidirectional: Ð21.5 dB (81.4 mV) All settings -12 dB at 0 gain; *1 Pascal = 94 dB SPL |
| Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load) | Omnidirectional: 110.7 dB All settings +6 dB at 0 gain |
| Signal to Noise Ratio (referenced at 94 dB SPL) | Omnidirectional: 79.5 dB |
| Equivalent Output Noise (A-weighted) | Omnidirectional: 14.5 dB SPL |
| Dynamic Range at 1 k ohm Load | 96.2 dB 100 dB at 0 gain |
| Common Mode Rejection | 45 dB minimum, 10 Hz to 100 kHz |
| Preamplifier Output Clipping Level | -6 dBV (0.5 V) 12 dB at 0 gain |
| Polarity | Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output connector. |
| Power Requirements | 11 to 52 Vdc phantom 2.0 mA current consumption |
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.
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)
| Polar Pattern | Supercardioid (MX391/S, MX391W/S) |
| Environmental Requirements | |
| Operating Temperature Range | -18 to 57 degrees C (0 to 135 degrees F) |
| Relative Humidity | 0 to 95% |
| Frequency Response | 50 to 17,000 Hz |
| Output Impedance (at 1000 Hz) | 180 ohms actual (rated at 150 ohms) |
| Open Circuit Sensitivity 1 kHz ref. 1 V per Pascal * | Omnidirectional: Ð21.5 dB (81.4 mV) All settings -12 dB at 0 gain; *1 Pascal = 94 dB SPL |
| Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load) | Omnidirectional: 110.7 dB All settings +6 dB at 0 gain |
| Signal to Noise Ratio (referenced at 94 dB SPL) | Omnidirectional: 79.5 dB |
| Equivalent Output Noise (A-weighted) | Omnidirectional: 14.5 dB SPL |
| Dynamic Range at 1 k ohm Load | 96.2 dB 100 dB at 0 gain |
| Common Mode Rejection | 45 dB minimum, 10 Hz to 100 kHz |
| Preamplifier Output Clipping Level | -6 dBV (0.5 V) 12 dB at 0 gain |
| Polarity | Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the preamplifier XLR output connector. |
| Power Requirements | 11 to 52 Vdc phantom 2.0 mA current consumption |
Your home for all things pro audio—backed by expertise and experience. Connect with us today.
Your home for all things pro audio—backed by expertise and experience. Connect with us today.
