The black MX391 from Shure is a small, surface-mounted electret condenser microphone. It is designed to be mounted on conference tables, stage floors, and lecterns. Its high sensitivity and wide frequency range make it especially suitable for picking up speech and vocals in sound reinforcement and recording applications.
Flat frequency response across the vocal range for uncolored sound Interchangeable cartridges provide a choice of polar pattern for each application Sleek, low-profile design for unobtrusive appearance Balanced, transformerless output for increased immunity to noise over long cable runs RF filtering
Shure MX391/O Specifications:
Transducer Electret Condenser
Polar Pattern Omnidirectional
Frequency Range 50 Hz to 17 kHz
Signal to Noise Ratio 79.5 dB
Equivalent Noise Level 14.5 dB A-Weighted
Maximum SPL 110.7 dB SPL 1%
Impedance 150 ohms
Sensitivity 81.4 mV/PA
Power Requirements 11-52 V
Output Connectors 3-pin XLR
Cable Length 12'
Operating Relative Humidity 0 to 95%
Operating Temperature 0 to 135°F (-17.78 to 57.22°C)