Shure

Microflex Series Compact Boundary Microphone with On/Off Switch (Omnidirectional)

Brand: Shure
Model: MX393/O
UPC: 042406051361
Products Variants:
Balanced, transformerless output for increased immunity to noise over long cable runs
Flat frequency response across the vocal range for uncolored sound
Interchangeable cardioid, supercardioid, and omnidirectional cartridges that provide optimal choice for each application
Programmable membrane on/off switch plus LED on/off indicator
Sleek, low-profile design for unobtrusive appearance
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Specification Sheet

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Product Properties

Description:

The MX393 Microflex�Wired Boundary Microphone from Shure is equipped with a programmable, silent membrane switch and green LED indicator. It is a high-quality solution for a range of applications such as altars, boardrooms and distance learning centers. Includes miniature three pin connector and 12' XLR cable.

All measurements taken with microphone mounted on a wooden surface 76.2 cm x 76.2 cm (30 in. x 30 in.).

Frequency Response
50 to 17,000 Hz

Polar Pattern
Omnidirectional

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

Sensitivity (at 1 kHz, open circuit voltage)
Omnidirectional: -22.0 dBV/Pa (79.4 mV)
1 Pascal=94 dB SPL

Maximum Sound Pressure Level (1 kHz at 1% Total Harmonic Distortion, 1 k ohm load)
Omnidirectional: 111.5 dB

Signal to Noise Ratio (referenced at 94 dB SPL)
Omnidirectional: 76.5 dB

Equivalent Output Noise (A-weighted)
Omnidirectional: 17.5 dB SPL

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%

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