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Appendix A: Block Diagram
24
MIC 1
H.A.
H.A.
B.A.
H.A.
-
+
-
+
-50dBu - +4dBu
LEVEL
HIGH
HIGH
LOW
LOW
BALANCE
AUX 2R
CHANNEL 3/4
CHANNEL 9/10
CHANNEL 11/12
CHANNEL 13/14
CHANNEL 15/16
AUX 2 RETURN
AUX 1L
CH 1L
INSERT 1L
INSERT 2R
CH 2R
-30dBu - +4dBu
10Kohm
B.A.
MASTER L
H.A.
B.A.
H.A.
-
+
-
+
LEVEL
BALANCE
AUX 2R
AUX 1L
CH 5R
INSERT 5L
INSERT 6L
CH 6R
-30dBu - +4dBu
10Kohm
B.A.
H.A.
H.A.
B.A.
H.A.
LEVEL
BALANCE
AUX 2R
AUX 1L
CH 7L
CHANNEL 7/8
AUX 1 RETURN
CH 8R
-30dBu - +4dBu
10Kohm
AUX L
AUX R
L
E
F
T
R
I
G
H
T
A
U
X
1
S
E
N
D
A
U
X
2
S
E
N
D
+4dBu, 10Kohm
B.A.
L.A.
L.A.
BALANCE
H.A.
AUX 1
LEFT
BUS
INSERTS
MAIN OUT
L
BUS
INSERTS
R
LA
SA
MASTER R
+4dBu, 75Ohm
100mw, 33Ohm
PHONES
SA LA
LA
LA
LA
AUX 2
SEND
+4dBu, 75Ohm
FUSE A
230V
7818
+
+
-
7918
B+
B-
115V
OV
P.T
POWER LED
FUSE B
VOLTAGE
SELECTOR
POWER SW
AC INPUT
AC 115V/50HZ
+
RIGHT
LA
PHONES
HIGH
HIGH
LOW
LOW
HIGH
HIGH
LOW
LOW