Shure MX393 Condenser Boundary Microphone

The MX393: a surface-mounted microphone; includes a programmable membrane on/off switch, an on/off indicator LED, and a miniature, three pin connector. Microflex Wired Boundary Microphones from Shure are the smartest boundary microphones yet. Equipped with features like programmable, silent membrane switches, logic inputs and outputs, and LED indicators, Microflex Boundary microphones are the high-quality solution for a 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 on/off switch and LED on/off indicator

The Microflex cartridges give you superior Shure quality sound for every application. In addition, their programmable switches offer the flexibility to be set for Push to Talk, Push to Mute or Push On/Push Off modes. Attractively designed with a low profile, professional appearance, the Microflex Boundary microphones come with an easy to use paint mask for your custom-color installations. Find out why we call the Microflex Boundary microphones "the smart choice" for just about every application. Take a listen today.

Technical Info

Frequency Response: 50 to 17,000 Hz

Polar Pattern: Cardioid

Output Impedance: EIA Rated at 150 ohms (180 ohms actual)

Sensitivity (at 1 kHz, open circuit voltage): -27.5 dBV/Pa (42.2 mV)

Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load): 117.0 dB

Signal to Noise Ratio (referenced at 94 dB SPL): 71.0 dB

Equivalent Output Noise (A-weighted): 23.0 dB

Dynamic Range: 94.0 dB

Common Mode Rejection: 45 dB minimum, 10 Hz to 100 kHz

Switch Attenuation: 50 dB minimum

Preamplifier Output Clipping Level: -6 dBV (0.5 V)

Polarity: Positive sound pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector.

Power Requirements:
- 11 to 52 Vdc phantom
- 2.0 mA current consumption

Environmental Requirements:
- Operating Temperature Range: -18 to 57 degrees C (0 to 135 degrees F)
- Relative Humidity: 0 to 95%