Product Description
Shure MX391W-A/C Microflex Cardioid Boundary Microphone (White) 12' Attached Cable, Detachable Preamp with XLR
Key Features
- Cardioid Pickup Pattern
- No Mute Switch
- Interchangeable Mic Capsule
- Preamp with XLR Output
Overview
Styled in white, this Shure MX391 is a Microflex cardioid boundary microphone. It's easy to use, features an inline preamp, and offers interchangeable mic capsules. It's designed to pick up speech in a manner preserving its intelligibility. The mic is well suited for sound reinforcement and recording applications in boardrooms, conference centers, educational settings, houses of worship, and more.
A Streamlined, Low-Profile Solution
- The compact, low-profile microphone is designed to be surface-mounted on conference tables, stage floors, and lecterns.
- The sleek, unobtrusive form factor stays out of the way of panelists and presenters, making it a smart solution for video conferencing.
- The MX391 doesn't offer mute switches, so speakers can't mute themselves—the mic is always ready to capture every moment in a panel discussion or presentation.
Interchangeable Mic Capsule Tailored for Speech and Vocals
- The condenser microphone is optimized for crisp, clear speech.
- The mic's cardioid pickup pattern focuses audio capture on the person speaking, for less unwanted background sound.
- An interchangeable mic capsule design allows you to swap out the cardioid capsule for a supercardioid capsule (if you need a narrower pickup pattern) or an omnidirectional capsule (for a wider, more forgiving pickup pattern).
Inline Preamp with XLR Output
- Included is an inline preamp with a standard 3-pin XLR output ready to plug into a PA system, mixer, or recorder capable of supplying 12 to 48V phantom power needed to power the mic.
- The preamp offers a high level of RF filtering, making the mic substantially less susceptible to unwanted radio interference.
Specifications
Microphone
Primary Applications | Conferencing |
Form Factor | Boundary/Surface Mount |
Intended Sound Sources | Vocals, Speech/Voice Over |
Sound Field | Mono |
Capsule | Electret Condenser |
Polar Pattern | Cardioid |
Circuitry | Solid-State |
High-Pass Filter | None |
Tone Adjustment | None |
On-Board Controls | None |
Windscreen | None |
Performance
Frequency Range | 50 Hz to 17 kHz |
Maximum SPL | 119 dB SPL |
Impedance | 180 Ohms |
Sensitivity | -30 dBV/Pa |
Output Level | -6 dBV (Max) |
Dynamic Range | 96.2 dB |
Signal-to-Noise Ratio | 71 dB |
Equivalent Noise Level | 23 dB A-Weighted |
THD | 1% |
CMRR | 45 dB |
Connectivity
Output Connectors (Analog) | 1 x XLR 3-Pin Male (on Preamp) |
Cable Length | 12.14' / 3.7 m |
Power
Operating Voltage | 11 to 52 V (Phantom Power) |
Operating Current Consumption | 2 mA |
Physical
Color | White |
Mounting | Surface-Mount (via Integrated Hardware) |
Mounting Thread Size | No Mount Included |
Included Case | None |
Included Filters | None |
Operating Temperature | 0 to 135°F / -17.8 to 57.2°C |
Operating Humidity | 0 to 95% |
Storage Temperature | -20 to 165°F / -28 to 73°C |
Certifications | CE *as per Manufacturer |
Dimensions | H: 0.75 x W: 2.09 x L: 3.13" / H: 19.05 x W: 53.04 x L: 79.4 mm |
Weight | 4.44 oz / 126 g |