1 2 3 4 5 6 7 8; 1 2 3 4 5 6; MPX-6 Basic Block Diagram- Page 2

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®

 *

System

®

 Product Reference

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

1 2 3 4 5 6 7 8

1 2 3 4 5 6

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)