Description
MX392 and MX393 Microflex® Wired Boundary Microphones from Shure are equipped with features like programmable, silent membrane switches, logic inputs and outputs, and green LED indicators. The high-quality solution for a range of applications such as altars, boardrooms and distance learning centers, Microflex Boundary microphones feature interchangeable condenser cartridges.
- MX392 & MX392BE: Surface-mount mic; LED logic input/switch logic output terminals, screw terminal connections, attached unterminated cable; Bottom Exit option available
- MX393: Surface-mount mic; LED logic input/switch logic output terminals, screw terminal connections, detachable cable with XLR output connector
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
Specifications
All measurements taken with microphone mounted on a wooden surface (76 x 76 cm)
- Cartridge Type: Electret Condenser
- Frequency Response: 50–17000 Hz
- Polar Pattern
- MX392/C, MX392BE/C, MX393/C Cardioid
- MX392/S, MX392BE/S, MX393/S Supercardioid
- MX392/O, MX392BE/O, MX393/O Omnidirectional
- Output Impedance: 180 Ω
- Output Configuration: Active Balanced
- Sensitivity
@ 1 kHz, open circuit voltage - Cardioid –30 dBV/Pa
- Supercardioid –28 dBV/Pa
- Omnidirectional –22 dBV/Pa
- 1 Pa=94 dB SPL
- Maximum SPL
1 kHz at 1% THD, 1 kΩ load - Cardioid 119 dB
- Supercardioid 118 dB
- Omnidirectional 111 dB
- Equivalent Output Noise
A-weighted - Cardioid 23 dB SPL
- Supercardioid 21 dB SPL
- Omnidirectional 15 dB SPL
- Signal-to-Noise Ratio
Ref. 94 dB SPL at 1 kHz - Cardioid 71 dB
- Supercardioid 73 dB
- Omnidirectional 80 dB
- Dynamic Range, 1 kΩ load, @ 1 kHz: 96 dB
- Common Mode Rejection, 10 Hz to 100 kHz: 45 dB, minimum
- Preamplifier Output 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 dBminimum
- 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) attached cable with shielded audio pair and three conductors for logic control, unterminated, bottom exit
- Net 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: 11–52 V DC, 2.0 mA
