Microphone User Manual

GENERAL
Shure Microflex
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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 es-
pecially suitable for picking up speech and vocals in sound re-
inforcement and recording applications. Interchangeable car-
tridges 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 inter-
nal preamplifier .
MX300 Series microphones take advantage of the princi-
ple 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 ra-
tio.
FEATURES
· Flat frequency response across the vocal range for un-
colored sound
· Interchangeable cardioid, supercardioid, and omni-
directional cartridges that provide choices for applica-
tions
· 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)
MODEL VARIATIONS
· MX392 Models: Surface-mount microphone; in-
cludes a programmable membrane on/off switch, log-
ic input/output ter minals, an on/off indicator LED,
screw terminal connections, and attac hed untermi-
nated cable.
· MX393 Models: Surface-mount microphone; in-
cludes a pr ogrammable membrane on/off switch, an
on/off indicator LED, and a miniatur e, three pin con-
nector.
Selecting a Cartridge
All Micr oflex mic rophones are available with any one of
three interchangeable cartridges . The polar pattern of the
original cartridge used in a particular microphone is indi-
cated by the model number suffix:
C = Cardioid, S = Superc ardioid, O = Omnidirec tional
Cardioid (C). Recommended for general sound rein-
forcement applic ations. Pic kup angle (-- 3 dB) = 130°.
Supercardioid(S).Recommendedfor sound reinforc e-
ment applications requiring narrow or more distant c over-
age. Picku p 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-fr equency re-
sponse and optimum rejection of backgr ound noise, place
the microphone on a flat s urface that is as large as pos-
sible. The s urface can be a floor, t able, or lec tern.
NOTE: Avoid locating micr ophones near reflectiv e sur-
faces other than the boundary sur face (i.e., beveled sides
of pulpits or overhanging shelv es). Failure to do so will re-
sult in inc reased levels of rev erberant sound.
MICROPHONE APPLICATION AND SELECTION GUIDE
Application Mounting Surface Microphone to
Cable Connector
Cable Output
Connector
Polar Pattern Microflex Model
Sound reinforcement for
speech and vocals
Lectern, pulpit, stage floor , or
conference table
Hard Wired
Hard Wired
TA3F
TA3F
Hard Wired
Hard Wired
XLR
XLR
Cardioid
Supercardioid
Cardioid
Supercardioid
MX392/C
MX392/S
MX393/C
MX393/S
Recording or remote moni-
toring of speech and vocals
Lectern, pulpit, stage floor , or
conference table
Hard Wired
TA3F
Hard Wired
XLR
Omnidirectional
Omnidirectional
MX392/O
MX393/O
Microflex
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MX300 Series User Guide
Boundary Microphones
27E2834 (CD)
ã2003, Shure Incorporated
PrintedinU.S.A.

Summary of content (24 pages)