Shure Microflex MX300 Series User Manual

GENERAL

Shure Microflex MX300 Series microphones are sur-
face-mounted electret condenser microphones designed primarily
for mounting on conference tables, stage floors, and lecterns.
Their high sensitivity and wide frequency range make them espe-
cially suitable for picking up speech and vocals in sound reinforce-
ment 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 preamplifier.
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 di-
rect-to-reverberant sound ratio.
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
•
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)
Application
Sound reinforcement for
speech and vocals
Recording or remote moni-
toring of speech and vocals
2004, Shure Incorporated
©
27E2834 (Rev. 5)
MICROPHONE APPLICATION AND SELECTION GUIDE
Mounting Surface
Lectern, pulpit, stage floor, or
conference table
Lectern, pulpit, stage floor, or
conference table
Microflex
MODEL VARIATIONS
•
MX392 Models: Surface-mount microphone; includes a pro-
grammable membrane on/off switch, logic input/output termi-
nals, an on/off indicator LED, screw terminal connections, and
attached unterminated cable.
•
MX393 Models: Surface-mount microphone; includes a pro-
grammable membrane on/off switch, an on/off indicator LED,
and a miniature, three pin connector.
SELECTING A CARTRIDGE
All Microflex microphones are available with any one of three in-
terchangeable cartridges. The polar pattern of the original car-
tridge used in a particular microphone is indicated by the model
number suffix:
Cardioid (C). Recommended for general sound reinforcement
applications. Pickup angle (-3 dB) = 130°.
Supercardioid (S). Recommended for sound reinforcement ap-
plications requiring narrow or more distant coverage. Pickup angle
(-3 dB) = 115°.
Omnidirectional (O). Recommended for recording or remote
monitoring applications. Pickup angle (-3 dB) = 360°.
MICROPHONE PLACEMENT
To maintain the flattest possible low-frequency response and
optimum rejection of background noise, place the microphone on
a flat surface that is as large as possible. The surface can be a
floor, table, or lectern.
NOTE: Avoid locating microphones near reflective
surfaces other than the boundary surface (i.e., beveled
sides of pulpits or overhanging shelves). Failure to do
so will result in increased levels of reverberant sound.
Microphone to Cable Output
Cable Connector Connector
Hard Wired Hard Wired
Hard Wired Hard Wired
TA3F
TA3F
Hard Wired Hard Wired
TA3F

MX300 Series User Guide
Boundary Microphones
Polar Pattern
Cardioid
Supercardioid
XLR Cardioid
XLR Supercardioid
Omnidirectional
XLR Omnidirectional
Microflex Model
MX392/C
MX392/S
MX393/C
MX393/S
MX392/O
MX393/O
Printed in U.S.A.