Shure MX391/C MicroFlex Boundary Cardioid MicrophoneBoundary microphone provides high-quality sound for a wide range of applications due to its interchangeable condenser cartridge and low-profile design.

• 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

Equipped with features like programmable, silent membrane switches, logic inputs and outputs, 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

• Advanced Cardioid Pattern: The cardioid polar pattern focuses on sound sources directly in front of the microphone, reducing ambient noise and ensuring clear audio capture.
• Sleek Design: The low-profile design of the MX391/C seamlessly integrates into any environment without drawing attention.
• Interchangeable Cartridges: Swap between different cartridges to tailor the microphone's response to specific recording needs.
• Wide Frequency Response: Capture a broad range of frequencies, from deep lows to crisp highs, for accurate and natural sound reproduction.
• Rugged Construction: Built to withstand rigorous use, the MX391/C features a durable construction that ensures longevity.

Specifications

• Type: Boundary (PZM)
• Frequency Response: 50 Hz to 17 kHz
• Polar Pattern: Cardioid
• Output Impedance: 180 ohms
• Sensitivity: -28.0 dBV/Pa at 1 kHz (39.2 mV)
• Maximum SPL: 110.0 dB
• Signal-to-Noise Ratio: 70.0 dB
• Dynamic Range: 80.0 dB
• Operating Voltage: 11 to 52 VDC
• Weight: 13.9 oz (394 g)