Shure MX392/O Omnidirectional - Condenser Boundary Microphone, Built-in Preamp, Attached 12' Unterminated Cable, Logic Functions, Programmable Switch and LED Indicator

The Shure MX392/O is an omnidirectional boundary microphone designed for superior sound quality across diverse professional applications. With its interchangeable condenser cartridge, programmable silent membrane switch, LED status indicator, and logic control options, this microphone seamlessly integrates into boardrooms, altars, distance learning centers, and more. Its low-profile, professional design ensures unobtrusive placement while delivering exceptional audio clarity.

Features

• Omnidirectional polar pattern for wide sound capture
• Programmable silent membrane switch with multiple modes (Push-to-Talk, Push-to-Mute, Push On/Off)
• TTL Logic LED input and switch output
• LED status indicator for visual monitoring
• Built-in preamp with attached 12' unterminated cable
• Sleek, low-profile design with customizable paint mask for discreet installations
• Environmental durability: Operating range from -18°C to 57°C, 0–95% humidity
• Power: Phantom powered (11–52 VDC)

Specifications

Microphone
- Type: Electret condenser
- Polar Pattern: Omnidirectional
- Frequency Response: 50 Hz – 17 kHz
- Output Impedance: 150 Ω (EIA rated), 180 Ω actual
- Sensitivity: -22.0 dBV/Pa (79.4 mV)
- Maximum SPL: 111.5 dB SPL (1 kHz at 1% THD, 1 kΩ load)
- Equivalent Output Noise (A-weighted): 17.5 dB
- Signal-to-Noise Ratio: 76.5 dB (94 dB SPL at 1 kHz)
- Dynamic Range: 94.0 dB (1 kΩ load at 1 kHz)
- Common Mode Rejection: ≥45 dB (10 Hz to 100 kHz)
- Preamplifier Output Clipping Level: –6 dBV (0.5 V)
- Polarity: Positive sound pressure on diaphragm produces positive voltage on red wire relative to black wire

Logic Connections
- LED IN: Active low (≤1.0 V), TTL compatible
- SWITCH OUT: Active low (≤0.5 V), sinks up to 20 mA, TTL compatible
- Max voltage: –0.7 V to 50 V (up to 50 V through 3 kΩ)

Power
- Phantom Power: 11 – 52 VDC, 2.0 mA

Environmental
- Operating Temperature: –18° C to 57° C
- Relative Humidity: 0–95%

In the Box
- 1 Shure MX392/O Boundary Microphone (with attached 12' unterminated cable)
- Built-in preamp (integrated)