Product Overview
The Shure MX393/O Microflex® Wired Omnidirectional Boundary Microphone features an interchageable condenser microphone cartridge, a programmable silent membrane switche, a 12 ft 3-pin XLR cable, and a green LED indicator. This microphone is ideal for such applications 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
- 12' TA3F to XLRM Cable
Specifications
- Type: Electret Condenser
- Frequency Response: 50–17000 Hz
- Polar Pattern: Omnidirectional
- Output Impedance: 180 Ω
- Output Configuration: Active Balanced
- Sensitivity @ 1 kHz, open circuit voltage: –22 dBV/Pa, 1 Pa=94 dB SPL
- Maximum SPL, 1 kHz at 1% THD, 1 kΩ load: 111 dB
- Self Noise, A-weighted: 15 dB SPL
- Signal-to-Noise Ratio, Ref. 94 dB SPL at 1 kHz: 80 dB
- Dynamic Range, 1 kΩ load, @ 1 kHz: 96 dB
- Common Mode Rejection, 10 Hz to 100 kHz: 45 dB, minimum
- Clipping Level at 1% THD: –6 dBV (0.5 V)
- Polarity: Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector
- Mute Switch: 50–20000 Hz, –50 dB minimum
- Logic Connections
- LED IN: Active low (≤1.0V), TTL compatible. Absolute maximum voltage: -0.7V to 50V.
- LOGIC-OUT: Active low (≤0.5V), sinks up to 20mA, TTL compatible. Absolute maximum voltage: -0.7V to 24V (up to 50V through 3kΩ).
- Cable: 3½ m (12 ft) detachable cable with 3-pin audio connector
- Weight: 172 g (0.38 lbs)
- Environmental Conditions
- Operating Temperature: -18-57 °C(0-135 °F)
- Storage Temperature: -29-74 °C(-20-165 °F)
- Relative Humidity: 0-95%
- Power Requirements: 11-52V DC , 2.0 mA
