Product Overview
The Shure MX392/O Microflex® Omnidirectional Wired Boundary Microphone features an interchangeable condenser microphone cartridge, a programmable silent membrane switch, LED logic input/switch logic output terminals, screw terminal connections, an attached unterminated cable, and a green LED indicator. This microphone works well for a wide range of applications such as altars, boardrooms, and distance learning centers.
Features
- 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
- Programmable membrane on/off switch plus LED on/off indicator
- LED logic input and switch logic output terminals for remote control or use with automatic mixers
Specifications
- Type: Condenser (electret bias)
- Frequency Response: 50 Hz – 17 kHz
- Polar Pattern: Omnidirectional
- Output Impedance: EIA rated at 150 Ω (180 Ω actual)
- Logic Connections
- LED IN: Active low (≤1.0 V), TTL compatible. Absolute maximum voltage: –0.7 V to 50 V
- SWITCH OUT: Active low (≤0.5 V), sinks up to 20 mA, TTL compatible
- Absolute maximum voltage: –0.7 V to 50 V (up to 50 V through 3 kΩ).
- Environmental Conditions
- Operating temperature range: –18° C – 57° C
- Relative Humidity: 0 – 95%
- Power Requirements: 11 – 52 Vdc phantom, 2.0 mA
- Sensitivity (at 1 kHz, open circuit voltage; 1 Pascal = 94 dB SPL); All settings -12 dB at 0 gain (internal modification): -22.0 dBV/Pa (79.4 mV)
- Maximum SPL, 1 kHz at 1% THD, 1 kΩ load; All settings +6 dB at 0 gain (internal modification): 111.5 dB
- Equivalent Output Noise, A-weighted: 17.5 dB
- Signal-to-Noise Ratio, referenced at 94 dB SPL at 1 kHz: 76.5 dB
- Dynamic Range 1 kΩ load at 1 kHz: 94.0 dB
- Common Mode Rejection, 10 Hz to 100 kHz: 45 dB minimum, 10 Hz to 100 kHz
- Preamplifier Output Clipping Level, 1% THD: –6 dBV (0.5 V)
- Polarity: Positive sound pressure on diaphragm produces positive voltage on red wire relative to black wire
