222
HARTREY
AVE.,
EVANSTON,
IL.
60204
U.S.A.
AREA
CODE
312/328-9000
CABLE:
SHUREMICRO
(S;
The M67
is
a transistorized microphone mixer/remote
amplifier specifically designed for professional ap-
plications. The excellent performance and versatility
of this complete, compact console make
it
an ideal
choice for studio, remote, or original sound reinforce-
ment use, and as an "add-on" mixer for expanding
existing facilities.
It
is also ideally suited for use with
tape recorders and
VTR's to provide multiple micro-
phone inputs.
The Model M67-2E Professional Microphone Mixer
is similar to Model M67 except that
it
is designed to
be connected to a 216-264 volt
AC
power line.
All
information on the data sheet for the Model
M67 applies, except for those references to
AC
operating voltage and power-line cord.
Features include:
Wide, flat frequency response and low distortion at
up to
$
18 dbm output.
Extremely low noise and RF susceptibility.
Four low impedance balanced-line microphone in-
puts with individual gain controls.
Mumetal shielding
on input transformers.
Line input switchable for 600-ohms terminating, or
bridging.
Outputs, 600-ohm line and low impedance micro-
phone level. Outputs may be used simultaneously.
VU meter calibrated for
+4
and
+
I0 dbm with
range switch. Illuminated with
AC
operation.
Meter isolated from DC on line. Line output trans-
former unaffected by up to
I00 ma DC.
AC
or battery operation (with accessory battery
pack). Noiseless automatic switch-over to battery in
event of
AC
line failure. Battery test provision.
Low frequency roll-off switch on each channel.
Two-level headphone monitor provision designed to
accommodate 600 to 2,000 ohm headphones. Any
headphones from 8 ohms to crystal may be used.
Direct mix bus input for stacking units.
Line output terminals phase indicated.
All
connec-
tions phased.
Compact, lightweight.
U.S. Underwriters Laboratory and Canadian
Standards Association approval for use in com-
mercial applications. (Applies to Model
M67).
Guarantee:
This Shure product is guaranteed in
normal use to be free from electrical and mechanical
defects for a period of one year from the date of
purchase. Please retain proof of purchase date. This
guarantee includes all parts and labor.
Shipping Instructions:
Carefully repack the unit
and return
it
prepaid to the factory.
If
outside
the United States, return the unit to your dealer or
Authorized Shure Service Center for repair. The unit
will be returned to you prepaid.
SPECIFICATIONS
PERFORMANCE
Frequency Response:
1-2
db
from 30 to 20,000 Hz.
Gain:
(Outputs terminated; line 600 ohms, rnicro-
phone 150 ohms). Gain will decrease a maximum of
5
db
with nearly exhausted battery.
Input
I
Line
I
~i;rophone
--
Low lmoedance Micro~hone 1150 ohms)
/
90 db
1
30 db
---
Line, Bridging or Terminating
'
140db
1
-20db
Noise:
Equivalent input noise: -129
dbV
(low im-
pedance microphone,
150 ohms -300 to 20,000 Hz.)
into 600-ohm load, at full gain.
Equivalent input hum and noise: -125
dbV
(low im-
pedance microphone,
150 ohms- 20-20,000
Hz.)
into
600-ohm load, at full gain.
Distortion:
Under
1%
T.H.D. from 20 to 20,000
Hz. at
+
I0 dbm out (0.5% Typical).
Control Interaction:
Under
1%
db
with any control
.
-
com bination.
INPUTS
Impedance
Input
1-d
for
~ctual
I
Input Clipping
-30 dbV (150 ohms)
Greater than +22
dbV
<
-
Line.Terminated
I
z:
OWK;~:
1
600 ohms
I
Greater than +24 dbm
Minimum Common Mode Rejection:
100
db
with microphone input of I0 volts at I00 Hz.
OUTPUTS
Impedance
Output Designed For Actual
Output Clipping
Use
With (Internal)
Level
Microphone Any low 0.5 Ohms 6 rnv, -44 dbV
Line
impedance
microphone
*Other line impedances may be used; however, the VU meter is
calibrated for 600-Ohm line termination. See "VU Meter"
Section on Page 3.
Headphone Output:
See "Headphone" Section on
Page
3.
Temperature Range:
Operating: O°F to 135OF (-17.8OC to 57OC)
Storage: -20°F to 160°F
(
-29OC to 71
OC)
Copyright
1970.
Shure Brothers
Inc
27A954
(LI)
Printed in
U.S.A.
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