Shure MX392, MX393 Specification Sheet
MODEL MX392 AND MX393 MICROPHONES
FEATURES
• Flat frequency response across the vocal range for uncolored sound
• Interchangeable cardioid, supercardioid, and omnidirectional cartridges that provide choices for applications
• Sleek, low-profile design for unobtrusive appearance
MX392 and MX393 Microphones
Specification Sheet
OVERVIEW
Shure Microflex™ MX300 Series microphones are surface-mounted electret condenser microphones designed primarily for mounting
on conference tables, stage floors, and lecterns. Their high sensitivity
and wide frequency range make them especially suitable for picking
up speech and vocals in sound reinforcement and recording applications. Interchangeable cartridges provide the installer with greater
flexibility and make it possible to easily reconfigure microphone coverage as the need arises. The MX392 and MX393 models include an
internal pre amplifier.
MX300 Series microphones take advantage of the principle that, at
a barrier or boundary, the sound pressure level doubles. When placed
near a sufficiently large boundary surface, the microphone has 6 dB
higher sensitivity and approximately 3 dB greater direct-to-reverberant sound ratio.
• Balanced transformerless output for increased immunity to
noise over long cable runs
• Low susceptibility to electromagnetic hum and RFI
• Programmable on/off switch and LED on/off indicator
• Logic input/output terminals for remote control or use with
automatic mixers (MX392 models only)
MODEL VARIATIONS
• MX392 Models: Surface-mount microphone; includes a
programmable membrane on/off switch, logic input/ output
terminals, an on/off indicator LED, screw terminal connections, and attached unterminated cable.
MICROPHONE APPLICATION AND SELECTION GUIDE
Application Mounting Surface Microphone to Cable
Sound reinforcement for speech
and vocals
Recording or remote monitoring
of speech and vocals
Video conferencing or computer
telephony
Lectern, pulpit, stage floor, or
conference table
Lectern, pulpit, stage floor, or
conference table
Lectern, pulpit, stage floor, or
conference table
Connector
Hard Wired
Hard Wired
TA3F
TA3F
Hard Wired
TA3F
Hardwired Hard Wired Cardioid MX392/C
• MX393 Models: Surface-mount microphone; includes a
programmable membrane on/off switch, an on/off indicator
LED, and a miniature, four pin connector.
Cable Output
Connector
Hard Wired
Hard Wired
XLR
XLR
Hard Wired
XLR
Polar Pattern
Cardioid
Supercardioid
Cardioid
Supercardioid
Omnidirectional
Omnidirectional
Microflex) Model
MX392/C
MX392/S
MX393/C
MX393/S
MX392/O
MX393/O
TL1051 (DI)
©2004 Shure Incorporated
MX392 AND MX393 MICROPHONES SPECIFICATION SHEET
SPECIFICATIONS
All measurements taken with microphone mounted on a wooden surface 76.2 cm x 76.2 cm (30 in. x 30 in.).
Frequency Response (Figure 1)
50 to 17,000 Hz
Polar Pattern (Figure 2)
Cardioid (MX392/C, MX393/C)
Supercardioid (MX392/S, MX393/S)
Omnidirectional (MX392/O, MX393/O)
Output Impedance
EIA Rated at 150 Ω (180 Ω actual)
Sensitivity (at 1 kHz, open circuit voltage)
Cardioid Cartridge: –27.5 dBV/Pa (42.2 mV)
Supercardioid Cartridge: –26.5 dBV/Pa (47.3 mV)
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 kΩ load)
Cardioid: 117.0 dB
Supercardioid: 116.0 dB
Omnidirectional: 111.5 dB
Signal to Noise Ratio (referenced at 94 dB SPL)
Cardioid: 71.0 dB
Supercardioid: 72.0 dB
Omnidirectional: 76.5 dB
Equivalent Output Noise (A-weighted)
Cardioid: 23.0 dB
Supercardioid: 22.0 dB
Omnidirectional: 17.5 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.
Logic Connections (MX392 Only)
LED IN: Active low (v1.0v), TTL compatible. Absolute maximum
voltage: -0.7V to 50V.
SWITCH OUT: Active low (v0.5V), sinks up to 20mA, TTL compatible. Absolute maximum voltage: -0.7V to 24V (up to 50V
through 3kΩ).
Power Requirements
11 to 52 Vdc phantom
2.0 mA current consumption
Environmental Requirements
Operating Temperature Range: –18° C to 57° C (0° F to 135° F)
Relative Humidity: 0 to 95%
Dimensions (Figure 3)
Certification
Eligible to bear CE Marking. Conforms to European EMC Directive 89/336/EEC. Meets applicable tests and performance criteria in European Standard EN55103 (1996) parts 1 and 2, for
residential (E1) and light industrial (E2) environments.
REPLACEMENT PARTS
Omnidirectional Cartridge..................................................R183
Supercardioid Cartridge.....................................................R184
Cardioid Cartridge..............................................................R185
12' (3.7m) Cable 3-Pin Miniature Connector (TA3F)
to male XLR....................................................................... C119
2
Loading...