Shure MX393/O Microflex Boundary Microphone

Thanks to its compact design and superior sound reproduction, the Shure Microflex MX393/O boundary hemisphere is the ideal solution for any conference room. The integrated preamplifier, programmable diaphragm switches, interchangeable capsules, logical inputs and outputs, and LED indicators equip this microphone for a wide variety of applications.

Half-cardioid (C), semi-supercardioid (S) and hemispherical (O) capsules provide solutions for a wide variety of sound requirements. DIP switch programmable buttons can be used either as talk button, mute button or on/off button.

With the help of the enclosed paint covers, the MX393 can be customized in color as needed.

Features:

• Replaceable condenser capsule
  
• Integrated preamplifier
• Available polar patterns: Semi-cardioid, semi-supercardioid and hemispherical
• Programmable diaphragm switch
• Logic input and output
• LED indicator
• Detachable 3.7 m cable with TA3F connector on XLR
• Enclosed paint covers
• Frequency response: 50 to 17,000 Hz
• Output impedance (at 1000 Hz): 180 ohms actual (nominal: 150 ohms)
• Maximum SPL: 111.5dB
• Signal-to-noise ratio (referenced to 94 dB SPL): 76.5 dB
• Equivalent output noise (A-weighted): 17.5 dB SPL
  
• Dynamic range at 1 k Ohm load: 94.0 dB, 100 dB at 0 gain
• Common mode rejection: 45 dB minimum, 10 Hz to 100 kHz
• Preamplifier output overdrive level: -6 dBV (0.5 V)
• Polarity: Positive sound pressure at the diaphragm produces a positive voltage at pin 2 relative to pin 3 of the output connector