User guide

3
REAR PANEL CONNECTORS AND CONTROLS
FIGURE 2
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LEVEL
M267 M367
LINE
LINE
MIC
LINE PHANTOM
IN
MONITOR
OFF ON
MIC
LINE
MIC
100/120 VAC 50/60 Hz 100 mA
INPUT
4321
MIX
BUS
5
OUTPUT
6
1 2 3 4
9 8 7 6 5
SPARE
REAR PANEL CONNECTORS AND CONTROLS (Figure 2)
1. Mic/Line Level Output Switch: Selects Mic or Line level to
match proper input level of the device connected to the M367
output. Mic signal level is typically 0.0001 – 0.003 V; Line sig-
nal level is typically 0.1 – 3.0 V.
2. Phantom Power Switch: Activates 12–volt phantom power
on each input set to Mic Level input. If needed, 48–volt phan-
tom power is available through activation of internal DIP switch
No. 7 (see
Internal Switches and Controls for instructions).
Note: Balanced dynamic microphones will not be damaged by
phantom power.
3. Mic/Line Level Input Switches 1–6: Selects Mic or Line to
match the incoming signal level. Mic signal level is typically
0.0001 to 0 .003 volts and Line signal level is typically 0.1 to
3.0 volts. In the Line level position, phantom power is discon-
nected from the inputs.
4. M267/M367 Mix Bus Level Switch: Selects a matching mix
bus level for the mixer connected to the M367. The M267 posi-
tion is used when a Shure M267 (or Shure FP42, FP51, M67
or SE30) is connected; the M367 position is used when anoth-
er M367 (or Shure FP32A) is connected to the Mix Bus.
IMPORTANT
In the M267 position, mixer output noise may in-
crease up to 30 dB, depending on the Master out-
put control setting. Unless required for mix bus hook-
up with an M267 or similar mixer,
leave the Mix Bus
Level switch in the M367 position.
5. Mix Bus Jack: Allows two mixers to be connected together.
The Mix Bus connection is “two–way” and pre–Master. When
two M367 mixers are connected via the Mix Bus, all 12 inputs
appear at both mixers’ outputs. The Master Gain control of ei-
ther M367 can be adjusted without affecting the other mixer’s
output. This provides the equivalent of a 12–input mixer with
two separate Master output sections.
NOTE: The output level of both M367 mixers will drop by 6 dB
when they are connected via the Mix Bus. Increase the Master
Gain to compensate.
The M367 has a balanced mix bus for optimum performance
when connected to another M367. Use a mix bus cable with
two
1
/
4
–inch stereo (tip, ring, sleeve) plugs for this application.
For mix bus connection to another Shure mixer, construct a
mix bus cable with a
1
/
4
–inch mono phone plug (tip—signal,
sleeve—ground) and the appropriate connector for the other
mixer’s mix bus jack (see Figure 3).
MIX BUS CONNECTIONS
FIGURE 3
BALANCED
UNBALANCED
TO M367 #1 TO M367 #2
TO M367 TO M267
N.C.
6. Channel Inputs: Six female XLR inputs are transformer–bal-
anced to provide superior rejection of hum, RFI, and other in-
terference.
7. Monitor In Jack: Designed to accept line level signals. This
mono jack (tip—signal, sleeve—ground) provides a “tape re-
turn” input or a communications channel input. The signal ap-
pears only in the M367 headphones circuit. Pulling the Phones
gain control (Pull/Monitor switch) routes the Monitor In signal
to the headphones. The M367 audio is
not heard in the head-
phones when the Monitor In switch is activated. M367 pro-
gram signal mixed with the Monitor In signal can be accom-
plished via internal DIP switch 4 (see
Internal Switches and
Controls for instructions).
The Monitor In jack can be modified to accept a stereo input
and provide a stereo sum monitor signal (see
Internal Modifi-
able Functions section).
8. Mixer Output: Two male XLR outputs are transformer–bal-
anced. The Line output is preset to line level (the line level out-
put can be modified to a true 600 Ω output impedance or
changed to mic level if desired [see
Internal Modifiable Func-
tions section]). The switchable output may be either micro-
phone or line level.
9. 100/120 VAC, 50/60 Hz Power Connector (M367): The
three–pin power connector provides for connection of the sup-
plied power cord to 100 to 120 Vac, 50/60 Hz power outlets.
220/240 VAC, 50/60 Hz Power Connector (M367E): The
three–pin power connector provides for connection of the sup-
plied power cord to 220 to 240 Vac, 50/60 Hz power outlets.
.125A, 250V Time Delay Fuse (M367): Directly below the
power connector is a slide–out compartment containing two
power line fuses. The outer (toward you) fuse is a spare.
.063A, 250V Time Delay Fuse (M367E): Directly below the
power connector is a slide–out compartment containing two
power line fuses. The outer (toward you) fuse is a spare.