6.3.1 Grand Master Select
The primary source selections for the Grand Master Bus are assigned with the Grand Master
Select controls in the Center Section.
The Lt Rt Fold Down Matrix source selection is made by engaging the TO GM switch on the
matrix control panel.
Each source selection for the Grand Master bus has a Left and Right channel calibration trim
pots that enable precision stereo mix summing.
The controls for the Grand Master Select function as follows:
The selected Stereo Masters (A, B, C) are routed to the Grand Master Bus and mixed
together at the GM ACA to create a GRAND MASTER stereo program. An external stereo
source may also be added via the External Input (EXT GM IN) patch points and engaging
the EXT switch.
The patch points from the Grand Master ACA outputs (GM ACA OUT) feed the Grand Master
Fader (GM FDR IN) patch points. A booster calibrates the output of the Grand Master Fader
(GM BSTR OUT) and is half-normalled to the 2Track Feed (2T FEED) distribution patch
points.
There are five (5) sources that may be selected as
sources to feed the Grand Master Bus:
•
ST A (Stereo A): Output of the Stereo A
boosters
•
ST B (Stereo B): Output of the Stereo B
boosters
•
ST C (Stereo C): Output of the Stereo C
boosters
•
EXT (External): Output of the GM EXT IN
patch points
•
Lt Rt Fold Down Matrix: Output of the Lt Rt
Fold Down Matrix
o
TO GM button must be engaged on
the Matrix
o
Level is set by the matrix MASTER
LEVEL
ST A (Stereo A): Routes the output of the Stereo A boosters to the Grand
Master Bus
•
Illuminates in white when engaged
ST B (Stereo B): Routes the output of the Stereo B boosters to the Grand
Master Bus
•
Illuminates in white when engaged
ST C (Stereo C): Routes the output of the Stereo C boosters to the Grand
Master Bus
•
Illuminates in white when engaged
EXT (External): Routes the output of the GM EXT IN patch points to the Grand
Master Bus
•
Illuminates in white when engaged
CAL L-R (Calibration Left-Right): Calibrates the stereo balance and level to the
Grand Master Bus for the associated source
•
A set of calibration trim-pots is provided for each Grand Master source
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