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Model M267 User Guide
Shure
Brothers Incorporated
222 Hartrey A
venue
Evanston IL 60202-3696 U.S.A.
27A8376
(QE)
E
1997, Shure Brothers Incorporated
Printed in U.S.A.
GENERAL
The
S
hur
e M
ode
l M
26
7 i
s a
m
icrophon
e m
ixer-remot
e a
m-
plifier
s
pecificall
y d
esigne
d f
o
r p
rofessiona
l a
pplications
. T
he
excellent performance, versatility and features of this com-
plete,
c
ompac
t c
onsol
e m
ak
e i
t a
n i
dea
l c
hoic
e f
o
r s
tudio
, r
e-
mote,
o
r s
oun
d r
einforcemen
t u
se
, a
n
d a
s a
n a
dd-o
n m
ixer
f
or
expanding
e
xistin
g f
acilities
. I
t i
s a
ls
o i
deall
y s
uite
d f
o
r u
s
e w
ith
audio
a
n
d v
ide
o t
ap
e r
ecorder
s t
o p
rovid
e m
ultipl
e m
icrophone
inputs.
Features:
• Wide,
flat frequency response and extremely low distor
-
tion
up to +18 dBm output
•
Extremely low noise and RF susceptibility
•
Four switchable microphone- or line-level balanced-line
inputs
w
it
h i
ndividua
l g
ai
n c
ontrol
s a
n
d l
ow-frequenc
y r
oll-
off
s
witches
. M
UMETA
L s
hieldin
g o
n i
npu
t t
ransformers
• Feedback-type
input
gain controls for maximum clipping
levels
and dynamic range
•
Output switchable for line or microphone level
• Built-in
switchable peak limiter cuts output overload
dis
-
tortion,
adapts to power supply voltage
• LED indicator shows limiter operation or overload with
limiter
defeated
•
Externally adjustable limiter threshold (–4 to +18 dBm)
• VU meter calibrated for +4 and +8 dBm with range
switch.
Illuminated with ac operation
• Ac or built-in battery operation. Noiseless automatic
switchover to battery in case of ac line failure. Battery
test
without program interruption
• Front-panel headphone level control and monitor jack
drives almost any stereo or mono headphones; output
can
be additional unbalanced line feed to drive
a tape re
-
corder
or power amplifier
•
Direct mix bus for stacking units
• Automatic muting prevents speaker damage during
turn-on
and -of
f
• Low distortion, high-stability tone oscillator for line test
and
level checks
• All
connections phased. Line
output terminals phase-in
-
dicated
• Compact and lightweight, with rugged, abrasion-resis-
tant
case
• Internally
selectable 120 or
240 V
ac, 50/60 Hz operation
• Underwriters’ Laboratories Listed and Canadian Stan-
dards
Association listed as Certified
SPECIFICATIONS
Frequency Response
30 Hz to 20,000 Hz,
±
2 dB
Voltage Gain
(at 1,000 Hz)
(Outputs terminated: line 600 W, microphone 150 W, mix
bus
3
.
3 k
W, headphone 200
W,
t
ip-sleev
e a
n
d r
ing-sleeve
)
Input
OUTPUT
Input
Line Microphone Mix
Bus
Low-Impedance
Microphone (150
W)
91 dB 41 dB 24 dB
Line
40 dB
–9 dB
–27 dB
Mix Bus
55 dB
5 dB
– –
Inputs
IMPEDANCE
Input
Designed
for Use
With
Actual
(Internal)
Input
Clipping Level
M
icrophone
19 to 6
00
W
1 kW
–32
d
B
V t
o
–
5 d
BV∗
(2
5 m
V t
o 0
.5
6 V
)
Line Less
than10 k
W
66 k
W
+20 dBV
Mix Bus
3.5 k
W
3.5 k
W
+7 dBV (2.2 V)
∗Depending
on input control setting