Shure M367 User Manual page 4

NOTE: This unit is not disconnected from the mains supply
when the Power switch is off. Remove the power connector
from the ac source when the mixer is not in use.
BATTERY COMPARTMENT (right side of mixer)
1. Battery Compartment: Holds two 9–volt batteries. Two fresh
9–volt alkaline batteries will power the unit for at least eight
hours under normal conditions. The battery compartment is
withdrawn by grasping the sides of the compartment, squeez-
ing to release the locks, and pulling the compartment outward.
With batteries in the battery compartment, the M367 will auto-
matically and silently switch to battery operation should the ac
voltage fall below a suitable level.
ABOUT BATTERY LIFE...
The M367 is designed for low current consumption. Under typ-
ical (+4 dBm into 600 in continuous use; no phantom–powered
microphones, meter illumination or headphones in use) and with
two fresh 9–volt alkaline batteries, the M367 will operate for
about eight hours before the Power LED flashes. At this point,
about 30 minutes of battery life remains. If more mixer features
are used (Phantom–powered microphones, continuous head-
phones monitoring, or constant meter illumination), battery life
will decrease accordingly (see table).
Mixer Operation
(A) No signal, phantom–powered mics,
headphones or meter illumination
(B) As in (A) with +4 dBm continuous out-
put
(C) As in (B) with six Shure SM81 mics at
12 V phantom power
(D) As in (B) with six Shure SM81 mics at
48 V phantom power
(E) As in (B) with 300 headphones driv-
en moderately loud (Phones control at "5")
(F) As in (B) with meter illumination con-
tinuously on (DIP switch position 6 closed
and Batt Check switch pressed once)
*until Power LED begins to flash, allowing about 30 minutes to replace
batteries.
Momentary use of headphones or meter illumination will not
appreciably affect battery life.
NOTE: The M367 draws insignificant current (6 A) from the
batteries when the mixer is turned off and batteries are installed.
Batteries left in the M367 will retain their charge up to their shelf
life.However, long–term storage of batteries in the M367 is not
recommended.
INTERNAL SWITCHES AND CONTROLS (Figure 4)
The M367 contains internal switches and adjustments that are
accessed through removal of the battery compartment and top
cover. These functions are described in the following para-
graphs.
2. Battery Compartment DIP Switches S701: Remove the bat-
tery compartment. This exposes the DIP switch assembly. The
switches provide the options in the following table ("up" is the
switch–open position; position shown in bold type is factory
setting).
NOTE: Switch positions and effects are also shown on the la-
bel on the mixer cover.
Battery Battery
Current Life
(mA) (hours)*
40 9
45 8
55 6.5
70 5
50 7
75 4.5
4
(MIXER
SIDE
VIEW)
1 2 3 4 5 6 7
BATTERY COMPARTMENT
INTERNAL DIP SWITCHES
FIGURE 4
DIP SWITCH S701 FUNCTIONS
Switch Switch
Position Function
1 Meter 0 VU
2
Limiter
3
Threshold
4 Program to
Monitor
5 Monitor In
Gain
6 VU Lamp Timed (turns on/off
when front panel
Batt Check switch
is activated. If not
manually switched
off, lamp will auto-
matically turn off
after 10 seconds to
conserve battery
7 Phantom 12 Vdc phantom
Power power to all input
M367 SETUP
To prepare the M367 mixer for operation, proceed as follows:
1. For ac operation, attach the supplied power cord to the rear–
panel ac connector and to a 100 to 120 Vac, 50/60 Hz
grounded (3–pin) power source. If desired, select functional
options by removing the battery compartment and activating
the exposed DIP switches (condenser microphone power, lim-
iter threshold, etc.). Reinsert and secure the battery compart-
ment.
2. For internal battery operation, remove the battery compart-
ment. Install two 9 V alkaline batteries, making sure polarity
(+/–) is correct (batteries will not seat correctly unless polarity
is correct). Select functional options using the DIP switches
(condenser microphone power, limiter threshold, etc.) Rein-
sert and secure the battery compartment.
NOTE: The VU meter is illuminated during ac operation. To illu-
minate the VU meter during battery operation, press the front–
panel Batt Check switch: If the internal VU Meter DIP switch is
in the factory–set Timed position, the VU meter will illuminate
for 10 seconds and then turn off. If the switch has been set to
the Toggled position, the meter will illuminate after pressing the
Batt Check switch and remain on until the Batt Check switch is
DIP SWITCH
S701
2
1
Switch Up Switch Down
0 VU = +4 dBm 0 VU = +8 dBm
2 Up + 3 Up = +16 dBm
2 Down + 3 Up = +8 dBm
2 Up + 3 Down = +4 dBm
2 Down + 3 Down = 0 dBm
Off On (provides atte-
nuated program
signal in head-
phones with Pull/
Monitor switch on
[pulled outward])
Normal High
Toggled (turns on/
off when front pan-
el Batt Check
switch is toggled.
Automatic timed
turnoff of lamp will
not occur.)
life.)
48 Vdc phantom
power to all input
channels if se- channels if se-
lected and rear– lected and rear–
panel Phantom panel Phantom
switch is on. switch is on.