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33GB4 User Guide
Talkback
The talkback mic input is on the rear connector panel.
The level of the talkback mic signal is controlled by the LEVEL pot (35). The signal is the fed to
all groups, aux 1-2, aux 3-4, aux 5-6 and aux 7-8 using the appropriate buttons (36).
Stereo Returns
There are two stereo return channels. The connectors are 1/4” jacks on the rear connector
panel.
Each has its own level control (37), and each may be routed to the L-R main mix or to groups 1-
2 for Stereo Return 1 or to groups 3-4 for Stereo Return 2 via the appropriate switches (38).
PSU Monitor LEDs
These LEDS (39) confirm the presence of the correct voltage on the +8V and the +/-17V power
rails in the console.
Rear Connector Panel
T/B MIC (3-pin female XLR)
Pin 1 Ground
Pin 2 Signal Hot
Pin 3 Signal Cold
MIX L, R & C OUTPUTS (3-pin male XLRs)
Pin 1 Chassis
Pin 2 Signal Hot
Pin 3 Gnd
MIX R GRP 4 GRP 2
GRP 1GRP 3MIX LMIX C
T/B MIC
INS INS INS
INSINSINSINS
MTX4
R MNTR
AUX4
MTX3
L
L
R
L
R
REC/ALT
OUT
2 TRK IN
L
R
AUX3MTX2
AUX2MTX1
AUX1
RR
AUX8L L AUX7
AUX6
AUX5STE RTN2 STE RTN1