The Shure MX412D/C is a 12-inch cardioid condenser gooseneck microphone engineered for professional speech and vocal pickup in installed sound systems. Its desktop base enables flexible placement in conference rooms, courtrooms, and houses of worship where permanent installations are impractical. The transformerless active balanced output, combined with CommShield® RF filtering, delivers clean audio over long cable runs with immunity to mobile device interference.
Technical Specifications
Acoustic Performance
• Polar Pattern: Cardioid
• Frequency Response: 50 Hz to 17 kHz
• Sensitivity: 21 mV/Pa @ 1 kHz, open circuit voltage
• Maximum SPL: 124 dB @ 1 kHz, 1% THD, 1 kΩ load
• Equivalent Output Noise: 28 dB SPL (A-weighted)
• Signal-to-Noise Ratio: 66 dB (referenced at 94 dB SPL @ 1 kHz)
• Dynamic Range: 96.2 dB @ 1 kΩ load, 1 kHz
• Mute Switch Attenuation: -50 dB minimum
Electrical Characteristics
• Output Impedance: 180 ohms (actual)
• Output Configuration: Active Balanced, 3-pin XLR
• Power Requirements: 11 to 52 V DC phantom power, 2.0 mA current consumption
• Preamplifier Output Clipping Level: -6.0 dBV (0.5 V) @ 1% THD
• Common Mode Rejection: 45 dB minimum
– Key Features
• 12-inch (30.5 cm) gooseneck for precise mic positioning
• Attached 10 ft (3 m) shielded audio cable with XLR connector
• Logic control via unterminated conductors: LED IN (active low, TTL compatible) and LOGIC-OUT (active low, sinks up to 20 mA)
• Shock mount delivers over 20 dB isolation from surface vibration noise
• Foam windscreen and locking flange mount included
– Typical Applications
Conference room pickup, courtroom testimony recording, pulpit and altar speech reinforcement, lectern and podium installation.
– Compatibility & Integration
Works with any mixing console, audio interface, or installed sound system accepting 11–52 V phantom power. TTL-compatible logic inputs enable integration with room control systems and mute switching.
