4
Setting Attenuation
·------~~--------------------
The
attenuation
switch
lets
you
reduce
the
signal
level
without altering
the
frequency
response
.
This
can
prevent extremely
loud
sounds
from
overloading
the
microphone
.
0dB
For
"quiet"
to
"normal"
sound
levels.
-lSdB
For
use
with
extremely
loud
sound
sources
such
as
drums,
horns,
or
loud
guitar
cabinets.
Integral Pop Filter
The
microphone
grille consists
of
3 separate
mesh
layers
that
act
as
an
integral
pop
filter.
This
helps
reduce
wind
and
breath
noise.
Depending
on
the
performer,
an
external
pop-protection
screen
or
windscreen
may
be
necessary
when
close-miking vocalists.
Load Impedance
Maximum
SPL
capability, output clipping
level,
and
dynamic
range
vary
with
the
input
load
impedance
of
the
preamplifier
to
which
you
connect
the microphone.
Shure
recommends
a
minimum
input
load
impedance
of
1
000
n.
Most
modern
microphone
preamplifiers
meet
this
requirement.
Higher
impedance
results
in
better performance for
these
specifications.
Power Requirements
This
microphone requires
phantom
power
and
performs best
with
a
48
Vdc
supply
(IEC-61938)
.
However,
it will operate
with
slightly decreased
headroom
and
sensitivity
with
supplies
as
low
as
11
Vdc.
Most
modern
mixers
provide
phantom
power.
You
must
use
a balanced
microphone
cable
:
XLR-to-XLR
or
XLR-to-TRS.
Specifications
Type
Electret Condenser
Frequency
Response
20 to 20,000 Hz
Polar Pattern
Cardioid
Output
Impedance
1400
Sensitivity
at 1 kHz,open circuit voltage
-37 dBV/Pa[1]
MaxlmumSPL
1 kHz at
1%
THD(2]
2500 0 load 138 dB (152 dB,
PAD
ON)
1000
0 load
133
dB (147 dB,
PAD
ON)
Signal-To-Noise Rallo[3)
84.5 dB
Dynamic Range
at 1kHz
2500
0 load 128 dB
1000
0 load 123
dB
Common
Mode
Rejection
20 Hz to 20 kHz
>55 dB
Clipping
Level
20 Hz
to
20 kHz, at
1%
THO
2500 0 load
17
dB
1000
0 load 1 dB
Self
Noise
equivalent
SPL,
A-weighted, typical
9.5
dB
Polartty
Positive pressure on diaphragm produces positive
voHage
on pin 2 with respect
to
pin 3
Weight
642 g(22.6 oz.)
Switch
Attenuator -15 dB
Low Frequency Response
Flat,
-6
dB/octave below 115
Hz
, or
-18
dB/octave below
80Hz
Connector
Three·pin professional audio (XLR), male, balanced
Power
Requirements
48 V DCphantom power, 5.4
rnA
[1]1 Pa=94 dB SPL
[2] THO of microphone preamplifier when applied input signal level is equivalent
to
cartridge output
at specified
SPL
(3] S/N ratio is the difference between 94
dB
SPL
and
equivalent SPL of self·noise, A-weighted
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