Shure MX391W-A/O Microflex Condenser Boundary Microphone (White, Omnidirectional)
Availability:
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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 |
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