SM27 User Guide
Cardioid Condenser Microphone
The
Shure®
SM27
is
a
rugged
and
versatile large-diaphragm, side-address
cardioid microphone.
Low
self-noise
and
extended
frequency
response
picks
up
vocal
and
instrument
nuances
with
clarity.
Durable
Shure
construction
features three separate
mesh
layers that
reduce
wind
and
breath
noise
.
Equally comfortable
on
the
stage
or
in
the
studio
.
Features
• Cardioid polar pattern-the
most
commonly
used
pattern for
both
studio
and
live
applications
• 1
inch
, externally biased, ultra-thin, 2.5
~m
.
24
Karat
gold-layered,
low
mass,
Mylare
diaphragm provides superior transient
response
•
Class
A,
discrete, transformerless preamplifier for transparency, extremely
fast transient response
and
no
crossover distortion, while minimizing
harmonic
and
intermodulation distortions
•
Premium
electronic components
and
gold-plated internal
and
external
connectors
•
Subsonic
filter eliminates
rumble
from
mechanical
vibration below
17
Hz
• Switchable
15
dB
pad
for
handling
extremely
high
sound
pressure levels
(SPLs)
• 3-position switchable low-frequency filter
helps
reduce
unwanted
background
noise or counteract proximity effect
• Integrated three-stage
"pop"
protection grille
reduces
plosives
and
other
breath
noise
• Internal shock
mount
reduces
handling
and
stand
noise
Variations
SM27-LC: Includes a
padded
carrying
bag
and
low-profile
stand
mount.
SM27-SC: Includes a rubber-suspension
shock
mount
and
velveteen
pouch.
Performance Characteristics
• Extremely uniform polar
response
•
Extended
frequency response
•
Minimal
self-noise
• Exceptional low-frequency
reproduction
•
Able
to
withstand
high
SPLs
•
High
output
level
•
No
crossover distortion
• Superior
common
-
mode
reject
i
on
and
suppression
of
radio
frequency
interference
(RFI)
Applications
•
Brass
and
woodwind
instruments
• Orchestras, choirs,
and
wind
ensembles
• Overhead
miking
of
drums
and
percussion instruments
• Close-miking of acoustic instruments
such
as
piano, guitar, violins,
drums,
and
percussion
• Low-frequency instruments
such
as
double
bass
and
kick
drum
• Electric guitar
and
bass
amplifiers
•
Vocals
and
speech
•
Room
ambience
Note:
Sound
quality
is
strongly
affected
by
microphone
location
and
room
acoustics.
To
achieve
the
best overall
sound
for
a particular
application,
it
may
be
necessary
to
experiment
with
microphone
placement
and
room
treatments.
Mounting the Microphone
Use
the
supplied microphone
mount
with
floor
or
boom
stands.
Visit
www.
shure
.
com
for
more
mounting
options:
•
To
reduce
the
pickup
of
unwanted
low-frequency mechanical vibrations,
use
an
isolating shock
mount.
•
For
stereo
applications,
use
the
optional
Shure
A27M
Stereo
Microphone Adapter.
Positioning the Microphone
The
front
of
the
microphone
is
marked
by
the
SIIV¥
logo
.
Position
this
side
toward
the
sound
source
.
Selecting Low-Frequency Response
A three-position
switch
on
the
back
of
the
microphone
lets
you
adjust
the
low-frequency
response.
Use
the
low
-frequency filter
to
reduce
wind
noise
,
room
noise,
or
proximity effect.
-Flat
response.
Provides
the
most
natural
sound
in
most
applications.
rLow
frequency cutoff.
Provides
an
18
dB-per-octave cutoff
at
80
Hz
.
Helps
eliminate floor
rumble
and
low-frequency
room
noise
from
heating
and
air conditioning
systems
. This setting
may
also
be
used
to
compensate for proximity effect or
to
reduce
low
frequencies
that
make
an
instrument
sound
dull
or
muddy.
-Low
frequency rolloff.
Provides
a 6 dB-per-octave rolloff filter
at
115
Hz
.
Use
this
to
compensate
for proximity effect
or
to
reduce
low
frequencies that
could
make
an
instrument
sound
dull
or
muddy
.
3
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