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INPUT 1
PRE-AMP
BALANCED
BUCHANAN
CONNECTOR
GAIN POT
(-12 to +21dB)
M/L/P SWITCH
P = +25dB/+44VDC
M = +25dB
L = 0 dB
VCA
1-1
VCA
1-2
RS232/RS422
DB25
POWER
SUPPLY
MEMORY
BATTERY
BACKUP
CROWN BUS
AUX PORT
3-PIN
MINI XLR
ENABLE
DSPI
12345678
123456
BAUD RATE
& PARITY
IQ ADDRESS
4-PIN
BUCHANAN
ACTIVE
BALANCE
OUTPUT
AMP
ACTIVE
BALANCE
OUTPUT
AMP
ACTIVE
BALANCE
OUTPUT
AMP
ACTIVE
BALANCE
OUTPUT
AMP
SUMMING
MIX BUS 1
SUMMING
MIX BUS 2
STACK INPUT 1
STACK INPUT 2
FROM
CPU
FROM
CPU
BUS 1
RELAY
BUS 1
RELAY
FROM
CPU
FROM
CPU
MAIN 1
OUTPUT
BALANCED
BUCHANAN
CONNECTOR
BUS 1
OUTPUT
BALANCED
BUCHANAN
CONNECTOR
MAIN 2
OUTPUT
BALANCED
BUCHANAN
CONNECTOR
BUS 2
OUTPUT
BALANCED
BUCHANAN
CONNECTOR
CPU
(MICRO-
PROCESSOR)
TO
VCAs
TO BUS
RELAYS
COMMUNICATION
STANDARD
INPUT 2
PRE-AMP
BALANCED
BUCHANAN
CONNECTOR
GAIN POT
(-12 to +21dB)
M/L/P SWITCH
P = +25dB/+44VDC
M = +25dB
L = 0 dB
VCA
2-1
VCA
2-2
FROM
CPU
FROM
CPU
INPUT 3
PRE-AMP
BALANCED
BUCHANAN
CONNECTOR
GAIN POT
(-12 to +21dB)
M/L/P SWITCH
P = +25dB/+44VDC
M = +25dB
L = 0 dB
VCA
3-1
VCA
3-2
FROM
CPU
FROM
CPU
INPUT 4
PRE-AMP
BALANCED
BUCHANAN
CONNECTOR
GAIN POT
(-12 to +21dB)
M/L/P SWITCH
P = +25dB/+44VDC
M = +25dB
L = 0 dB
VCA
4-1
VCA
4-2
FROM
CPU
FROM
CPU
INPUT 5
PRE-AMP
BALANCED
BUCHANAN
CONNECTOR
GAIN POT
(-12 to +21dB)
M/L/P SWITCH
P = +25dB/+44VDC
M = +25dB
L = 0 dB
VCA
5-1
VCA
5-2
FROM
CPU
FROM
CPU
INPUT 6
PRE-AMP
BALANCED
BUCHANAN
CONNECTOR
GAIN POT
(-12 to +21dB)
M/L/P SWITCH
P = +25dB/+44VDC
M = +25dB
L = 0 dB
VCA
6-1
VCA
6-2
FROM
CPU
FROM
CPU
MPX-6 Basic Block Diagram
(Page 2 of 3)