Crown SMX-6, AMB-5, MPX-6 User Manual

[

IQ Mixer/Multiplexer

AMB-5, MPX-6, SMX-6

HARDWARE INSTALLATION MANUAL

©1993 by CROWN INTERNATIONAL, INC.

Mailing Address: Service Department:

P.O. Box 1000 1718 W. Mishawaka Rd

Elkhart, IN 46515-1000 Plant 2 SW

Trademark Notice:

™

AMB-5,
Amcron,® IQ System,

All other trademarks are the property of their respective owners.

SMX-6,

™

MPX-6,

™

Distributed Intelligence,

®

®

PCC

and

PZM

™

and

®

are registered trademarks of Crown International, Inc.

Algo

Elkhart, IN 46517

™

are trademarks and

Crown,

®

Modified for the

World Wide Web

FULL

3

YEAR

THREE-YEAR

WARRANTY

INTERNATIONAL

AMCRON, a division of Crown International, Inc., 1718 West
Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to
you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER
of each NEW Amcron product, for a period of three (3) years from the
date of purchase by the original purchaser (the ÷warranty periodš) that
the new Amcron product is free of defects in materials and
workmanship, and we further warrant the new Amcron product
regardless of the reason for failure, except as excluded in this Amcron
Warranty.

ITEMS EXCLUDED FROM THIS AMCRON WARRANTY

This Amcron Warranty is in effect only for failure of a new Amcron
product which occurred within the Warranty Period. It does not cover
any product which has been damaged because of any intentional
misuse, accident, negligence, or loss which is covered under any of
your insurance contracts. This Amcron Warranty also does not extend
to the new Amcron product if the serial number has been defaced,
altered, or removed.

We will remedy any defect, regardless of the reason for failure (except
as excluded), by repair, replacement, or refund. We may not elect
refund unless you agree, or unless we are unable to provide
replacement, and repair is not practical or cannot be timely made. If a
refund is elected, then you must make the defective or malfunctioning
product available to us free and clear of all liens or other
encumbrances. The refund will be equal to the actual purchase price,
not including interest, insurance, closing costs, and other finance
charges less a reasonable depreciation on the product from the date
of original purchase. Warranty work can only be performed at our
authorized service centers. We will remedy the defect and ship the
product from the service center within a reasonable time after receipt
of the defective product at our authorized service center. All expenses
in remedying the defect, including surface shipping costs to the nearest
authorized service center, will be borne by us. (You must bear the
expense of all taxes, duties and other customs fees when transporting
the product.)

You must notify us of your need for warranty service not later than ninety
(90) days after expiration of the warranty period. All components must
be shipped in a factory pack. Corrective action will be taken within a
reasonable time of the date of receipt of the defective product by our
authorized service center. If the repairs made by our authorized service
center are not satisfactory, notify our authorized service center
immediately.

DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL

YOU ARE NOT ENTITLED TO RECOVER FROM US ANY
INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE
NEW AMCRON PRODUCT. THIS INCLUDES ANY DAMAGE TO
ANOTHER PRODUCT OR PRODUCTS RESULTING FROM SUCH A
DEFECT.

No person has the authority to enlarge, amend, or modify this Amcron
Warranty. This Amcron Warranty is not extended by the length of time
which you are deprived of the use of the new Amcron product. Repairs
and replacement parts provided under the terms of this Amcron
Warranty shall carry only the unexpired portion of this Amcron
Warranty.

We reserve the right to change the design of any product from time to
time without notice and with no obligation to make corresponding
changes in products previously manufactured.

No action to enforce this Amcron Warranty shall be commenced later
than ninety (90) days after expiration of the warranty period.

THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS

CONTAINED IN THIS MANUAL FOR AMCRON PRODUCTS.

SUMMARY OF WARRANTY

WHAT THE WARRANTOR WILL DO

HOW TO OBTAIN WARRANTY SERVICE

DAMAGES

WARRANTY ALTERATIONS

DESIGN CHANGES

LEGAL REMEDIES OF PURCHASER

9/90

3

YEAR

NORTH AMERICA

CROWN, a division of Crown International, Inc., 1718 West Mishawaka Road,
Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER
and ANY SUBSEQUENT OWNER of each NEW Crown product, for a period of
three (3) years from the date of purchase by the original purchaser (the ÷warranty
periodš) that the new Crown product is free of defects in materials and
workmanship, and we further warrant the new Crown product regardless of the
reason for failure, except as excluded in this Crown Warranty.

This Crown Warranty is in effect only for failure of a new Crown product which
occurred within the Warranty Period. It does not cover any product which has been
damaged because of any intentional misuse, accident, negligence, or loss which
is covered under any of your insurance contracts. This Crown Warranty also does
not extend to the new Crown product if the serial number has been defaced,
altered, or removed.

We will remedy any defect, regardless of the reason for failure (except as
excluded), by repair, replacement, or refund. We may not elect refund unless you
agree, or unless we are unable to provide replacement, and repair is not practical
or cannot be timely made. If a refund is elected, then you must make the defective
or malfunctioning product available to us free and clear of all liens or other
encumbrances. The refund will be equal to the actual purchase price, not including
interest, insurance, closing costs, and other finance charges less a reasonable
depreciation on the product from the date of original purchase. Warranty work can
only be performed at our authorized service centers or at the factory. We will
remedy the defect and ship the product from the service center or our factory within
a reasonable time after receipt of the defective product at our authorized service
center or our factory. All expenses in remedying the defect, including surface
shipping costs in the United States, will be borne by us. (You must bear the expense
of shipping the product between any foreign country and the port of entry in the
United States and all taxes, duties, and other customs fees for such foreign
shipments.)

You must notify us of your need for warranty service not later than ninety (90) days
after expiration of the warranty period. All components must be shipped in a factory
pack, which, if needed, may be obtained from us free of charge. Corrective action
will be taken within a reasonable time of the date of receipt of the defective product
by us or our authorized service center. If the repairs made by us or our authorized
service center are not satisfactory, notify us or our authorized service center
immediately.

YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL
DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN PRODUCT.
THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS
RESULTING FROM SUCH A DEFECT. SOME STATES DO NOT ALLOW THE

EXCLUSION OR LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO
YOU.

No person has the authority to enlarge, amend, or modify this Crown Warranty. This
Crown Warranty is not extended by the length of time which you are deprived of
the use of the new Crown product. Repairs and replacement parts provided under
the terms of this Crown Warranty shall carry only the unexpired portion of this
Crown Warranty.

We reserve the right to change the design of any product from time to time without
notice and with no obligation to make corresponding changes in products
previously manufactured.

THIS CROWN WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, YOU MAY
ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE. No action
to enforce this Crown Warranty shall be commenced later than ninety (90) days
after expiration of the warranty period.

ITEMS EXCLUDED FROM THIS CROWN WARRANTY

DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES

THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS

CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS.

Telephone: [phone]. Facsimile: 219/294-8301Telephone: [phone]. Facsimile: 219/294-8301

SUMMARY OF WARRANTY

WHAT THE WARRANTOR WILL DO

HOW TO OBTAIN WARRANTY SERVICE

WARRANTY ALTERATIONS

DESIGN CHANGES

LEGAL REMEDIES OF PURCHASER

9/90

The information furnished in this manual does not include all of the details of design, production, or
variations of the equipment. Nor does it cover every possible situation which may arise during installation,
operation or maintenance. If you need special assistance, beyond the scope of this manual, please contact
our Crown Technical Support Group.

Crown Technical Support Group, POB 1000, Elkhart, Indiana 46515-1000 U.S.A.

Phone: [phone] or 219/294-8200 Fax: [phone]

WARNING

TO REDUCE THE RISK OF ELECTRIC

SHOCK, DO NOT EXPOSE THIS

EQUIPMENT TO RAIN OR MOISTURE!

IQ Mixer/Multiplexer Hardware Installation

CONTENTS

1 Welcome.......................................................................7

1.1 Options .................................................................7

1.2 Unpacking.............................................................7

2 Facilities ........................................................................8

3 Hardware Installation ..................................................10

3.1 Connecting to a Host Computer (Step 1) ...........10

3.1.1 Communication Standards & Parameters 11

3.2 Connecting to the Crown Bus (Step 2) ...............12

3.2.1 Setting the IQ Address.............................12

3.2.2 Crown Bus Wiring .................................... 13

3.3 Connecting the Audio Ins & Outs (Step 3) .........15

3.3.1 Mic/Line Inputs .........................................15

3.3.2

AMB-5

3.3.3 Audio Outputs ..........................................16

3.3.4 Stack Inputs .............................................17

3.3.5 Paralleling Inputs......................................18

3.4 Connecting Auxiliary Devices (Step 4)............... 19

Ambient Sensing Input .................16

4 Options .......................................................................20

4.1 Option 1: A 1-Loop IQ Interface .........................20

4.2 Option 4: Crown Local Net ................................. 20

4.2.1 Wiring the Crown Local Net ..................... 20

5 Service........................................................................22

5.1 Amcron Service ..................................................22

5.2 Crown Service.....................................................22

5.2.1 Service at a Crown Service Center ..........22

5.2.2 Crown Factory Service .............................22

6 Technical Information ................................................. 23

6.1 Audio ...................................................................23

6.1.1 Input Section ............................................23

6.1.2 VCA Sections............................................23

6.1.3 Output Section..........................................23

6.1.4 Level Sense Circuits

6.2 Control and Interface Section .............................23

6.2.1 Crown Bus Interface.................................23

6.2.2 RS232/RS422 Interface.............................23

6.2.3 D/A Converter .......................................... 23

6.2.4 Log Amp and A/D Converter ....................24

6.2.5 Auxiliary Port ............................................ 24

7 Specifications ............................................................. 26

7.1 General ............................................................... 26

7.2 Audio ................................................................... 26

(AMB-5 & SMX-6)...

23

Page 4

A Appendix ..................................................................... 27

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

1.1 Three Mixer / Multiplexer Models ............................ 6

2.1 Front and Rear Panels.............................................. 8

3.1 An

3.2 RS232 Cable Wiring for a PC ..................................11

3.3 RS422 Cable Wiring for a Macintosh ......................11

3.4 RS232 Cable Wiring for a Macintosh ......................11

3.5 Selecting the Communication Parameters ..............12

3.6 Crown Bus Wiring for Removable Barrier Blocks... 13

3.7 Crown Bus Wiring for 5-pin DIN Input ....................14

3.8 Crown Bus Wiring for 4-pin DIN Output ................. 14

3.9 Crown Bus Wiring Loopš from Output to Input, etc.14

3.10 An Audio Input Section............................................15

3.11 Suggested Audio Input Gain Control Settings........15

3.12 Balanced Audio Input Wiring...................................15

3.13 Unbalanced Audio Input Wiring ..............................16

3.14 Sensing Input Section.............................................. 16

3.15 An Audio Output Section .........................................17

3.16 Balanced Audio Output Connections

3.17 Unbalanced Audio Output Connections

3.18 A 12x2 Mixer Using 2 Mixer/Multiplexers

3.19 Stacking the Outputs of Multiple Units ................... 18

3.20 A 6x8 Mixer Using 4 Mixer/Multiplexers................. 18

3.21 Paralleling the Inputs of Multiple Units

3.22 A 12x8 Mixer Using 8 Mixer/Multiplexers

3.23 Sample Auxiliary System Wiring

3.24 Internal Auxiliary Circuit

4.1 A Crown Local Net RS422 Serial Loop

4.2 Crown Local Net Wiring

6.1 General IQ Mixer Block Diagram

A.1 IQ Address Switch Settings from 0 to 125.............. 27

A.2 IQ Address Switch Settings from 126 to 250..........28

IQ System

ILLUSTRATIONS

with a PC Host Computer, etc. ........10

......................

..................

...............

...................

...............

.............................

..........................................

....................

...........................................

............................

17
17
17

18
18
19
19
20
21
25

Rev. 0

Page 5

IQ Mixer/Multiplexer Hardware Installation

ENABLEDSPI

ENABLEDSPI

Fig. 1.1 Three Mixer / Multiplexer Models

Page 6

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

1 Welcome

Thank you for purchasing a Crown IQ mixer/multi­plexer. IQ mixer/multiplexers are intelligent mixers
with special signal routing capabilities. Their intelli­gence stems from a powerful onboard microproces­sor which enables them to be controlled and
monitored by a Crown

IQ System

each output can be individually controlled and, with
their

distributed intelligence

operate even when an

IQ System

In addition to two main outputs (one for each chan­nel), each model has a second set of ÷busš outputs
which are switched on/off by a relay. This enables
many mixer/multiplexers to be connected to a com­mon audio bus without loading it down. They are
designed to work as stand-alone units in a small
audio system or as modules in a large audio sys­tem.

Three different models are available to serve a wide
variety of needs. The

MPX-6

operate as 6x2 mixers. The
as a 5x2 mixer. Multiple units can be connected
together to form larger mixers. For example, a

6

and

SMX-6

can be connected together to form a
single 12x2 mixer. They can also be connected as a
6x4 mixer.

®

. Each input and

™

capability, continue to

is not connected.

™

and

SMX-6

AMB-5™

™

models

can operates

MPX-

1.1 Options

In a standard
the mixer/multiplexers are connected to the system
via the Crown Bus. The Crown Bus is a serial com­munication loop which carries IQ commands and
data. IQ mixer/multiplexers are also able to bypass
the Crown Bus and connect (one at a time) directly
to a computer (PC compatible or Macintosh®). Once
configured, the mixer/multiplexers can be discon­nected and allowed to operate by themselves.

Option 1 allows an
nect to a host computer and serve as a Crown Bus
interface between the computer and other IQ com­ponents. This eliminates the need to purchase a
separate IQ interface (IQ-INT) for a small

tem

.

Option 4 allows an
Crown Local Net loop. The Crown Local Net is a
communication subsystem within an
Using it, two or more
between themselves to keep track of the total num­ber of open microphones. This information can then
be used to prevent feedback when more mics are
open.

Note: Options 2-3 are not presently available.

IQ System

AMB-5, MPX-6

SMX-6

, the IQ components like

or

SMX-6

to con-

IQ Sys-

(only) to connect to a

IQ System

SMX-6s

can communicate

.

The

MPX-6

is the simplest of the three models. It
provides basic mixing capabilities. All control and
monitor functions are handled by the
The

MPX-6

does not have the automatic mixing

IQ System

capability of the other models because it does not
have input sensing.

The

SMX-6

sensing

is more sophisticated because it has

ability. A sensing circuit is located at the
beginning of each input to sense the input signal
level ahead of any signal processing. Similar sen­sors are located at each output. These sensors,
along with its onboard intelligence, enable the

6

to perform many versatile functions like automatic

SMX-

mixing, compression, and automatic level control.
The

AMB-5

has the same functions as an

SMX-6

plus it has the ability to sense the ambient sound
level and automatically adjust its output level ac­cordingly. In this way it serves as the ultimate
automatic level controller. Input 6 is dedicated as
the sensing input, leaving five to function normally
as a 5x2 mixer. Unlike the

SMX-6

, signal processing
is only available for Channel 1. Channel 2 functions
like an

MPX-6

.

.

1.2 Unpacking

Please unpack and inspect the unit for any damage
that may have occurred during transit. If any dam­age is found, notify the transportation company im­mediately. Only you, the consignee, may initiate a
claim with the carrier for damage resulting from
shipment. Crown will cooperate fully as needed.
Save the shipping carton as evidence of damage for
the shipper’s inspection.

Even if the unit arrived in perfect condition, as most
do, save all packing materials so you will have them
if you ever need to transport the unit. NEVER SHIP

THE UNIT WITHOUT THE FACTORY PACK.

Rev. 0

Page 7

(Front View)

IQ Mixer/Multiplexer Hardware Installation

120 VAC

60 Hz

20 W

AUX
CTRL

RS232 / RS422

CROWN BUS

SERIAL DATA LOOP

IN

OUT IN

+–+

INPUT

GROUND

ONLY

–

AUDIO
OUT

2

MAIN

STACK
IN

BUS

AUDIO
OUT

1

MAIN BUS

STACK
IN

(Rear View)

Figure 2.1 Front and Rear Panels

2 Facilities

AUX Connector

A 3-pin male mini-XLR connector is used for remote
control of equipment lacking the Crown Bus. A 10
VDC power source is provided to control solid state
relays and other logic circuits. The auxiliary con­nector also includes a high-impedance 10 VDC in­put. (Section 3.4)

Stack Audio Inputs

These two stack inputs allow you to multiply the
number of audio inputs by stacking 2, 3, or more
units to build a 12x2, 18x2, or larger mixer. (Section

3.3.3)

DSPI

This yellow LED is a Data Signal Presence Indicator.
It flashes whenever a valid IQ command has been
received. The indicator can also be forced on to aid
rapid troubleshooting of the Crown Bus wiring.

AUDIO
IN

6

+–+–+–+–+–

AUDIO

ADD 25

0

5

FOR MIC

IN

-5

10

-10

15

5

21

-12

LMP

+– +– +– +– +–

AUDIO

ADD 25

0

5

FOR MIC

IN

-5

10

-10

-12

-10

15

4

21

LMP

AUDIO

ADD 25

0

5

FOR MIC

IN

-5

10
15

3

21

-12

LMP

AUDIO

ADD 25

0

5

FOR MIC

IN

-5

10

-10

15

2

21

-12

LMP

AUDIO

ADD 25

0

5

FOR MIC

IN

-5

-10

-12

-5

10

-10

15

1

21

-12

LMP

Enable Indicator

This amber enable indicator shows that the unit is
receiving AC power.

Audio Input Gain Control

Each of the six input channels has a screwdriver­set, calibrated gain potentiometer for adjusting the
input gain to the input signal level. They can be
used to compensate for different microphone sensi­tivities. (Section 3.3.1)

RS232/RS422 Connector

This DB25 connector functions as a standard RS232
or RS422 serial communications port. It can be used
for connection directly to a host computer (Section

3.1) or, if Option 4 was purchased, for connection to
a Crown Local Net loop (Section 4.2).

Crown Bus Ground Connector

This chassis ground stud is provided to connect an

ADD 25

0

5

FOR MIC

10
15

21

LMP

Page 8

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

Important:
(H) connectors. TURN THE UNIT OFF before changing the settings of the IQ Address (M),
Baud Rate & Parity (N) or Communication Standard (O) switches.

optional shield for the Crown Bus cable. Only the
shield of the input cable should be connected.
Shielded wire will reduce the total distance a Crown
Bus loop can be run, but shielding may be neces­sary to reduce interference with certain kinds of
audio cables. (Section 3.2)

TURN THE UNIT OFF before connecting to the RS232/RS422 (F) or Crown Bus

Crown Bus Input/Output Connector

A 4-pin removable barrier block plug is used for
input and output connection to the Crown Bus. The

pins are numbered backward from right to left (as
you face the back panel of the unit). Pin 1 is input

negative (–), pin 2 is input positive (+), pin 3 is
output negative (–), and pin 4 is output positive (+).
(Section 3.2)

Main Audio Outputs

A 3-pin removable barrier block plug is used to
connect to the main output of each channel. These
outputs can also be connected to the stack inputs
(B) of other mixer/multiplexers to make a 12x2 (or
larger) mixer. (Section 3.3.2)

Auxiliary Bus Audio Outputs

A 3-pin removable barrier block plug is used to
connect to the bus audio output of each channel.
The bus outputs are isolated switchable outputs that
can be turned on when needed by the
This allows many multiplexers to be tied together on
the same bus without loading down the outputs.
(Section 3.3.2)

IQ System

Audio Inputs

A 3-pin removable barrier block plug is used to
connect to the input of each of the six audio inputs.
The input gain control (E) and the input selector (K)
of each one should be set to match the input signal
level. These inputs can also be connected in parallel

with the inputs of other mixer/multiplexers to make a
6x4 (or larger) mixer. (Section 3.3.1)

Input Selector

A three-position input selector accommodates dif­ferent input signal levels. The three settings are L
for line-level input, M for mic-level input, and P for
mic-level input with phantom power. The P setting
supplies 44 volts DC for phantom-powered mics.

IQ Address

An 8-section DIP switch is used to set the IQ ad­dress of the unit. The unit must be given a unique IQ
address so it can be independently controlled and
monitored by a the system. It must also be set
properly if the unit is to be used in a Crown Local
Net. Two or more IQ components of the same type
should NEVER have the same address on the same
Crown Bus loop. (Section 3.2) Important: The IQ

address should only be set with the power cord
disconnected from the AC supply.

Baud Rate & Parity

A 6-section DIP switch is used to set the baud rate
and parity for RS232/RS422 serial communication.
This is only necessary when the DB25 connector (F)
is used. Important: The baud rate should only be set

with the power cord disconnected from the AC sup-

.

ply.

Communication Standard

A communication standard switch which allows the
unit to be configured for the RS232 or RS422 com­munications. (Sections 3.1³3.1.1) Important: The

communication standard should only be set with the
power cord disconnected from the AC supply.

Rev. 0

Page 9

RS232

IQ Mixer/Multiplexer Hardware Installation

ENABLEDSPI

ENABLE

ODEP

CH1 CH2

CH1 CH2

CH1 CH2

IOC
SPI

ODEP
IOC
SPI

ODEP
IOC
SPI

POWER

OFF

ENABLE

POWER

OFF

ENABLE

POWER

OFF

Fig. 3.1 An IQ System with a PC Host Computer and Two Mixer/Multiplexers

3 Hardware Installation

The installation of an IQ mixer/multiplexer consists
of two major parts: installing the hardware and con­figuring the software. This manual deals only with
hardware installation. Refer to the appropriate soft­ware manual for instructions in setting up and oper­ating your unit.

Provide adequate cooling if the unit will be used in a
hot environment. Allow one empty rack space (1.75

inches or 4.4 cm.) between each unit if more than
four units will be stacked in a cabinet. Each empty

rack space should be sealed with a blank rack
panel.

The hardware installation is divided into 4 steps:

1) connecting to a host computer, 2) connecting to
the Crown Bus, 3) connecting the audio inputs and
outputs and 4) connecting auxiliary devices.

3.1 Connecting to a Host Computer (Step 1)

An IQ host computer is an IBM® PC compatible or
Apple® Macintosh computer which is used to con­figure or control/monitor part or all of an
Depending upon the design of your
may or may not require a host computer during
normal operation.

IQ System

IQ System

, it

ENABLEDSPI

ENABLE

ODEP

CH1 CH2

CH1 CH2

IOC
SPI

ODEP
IOC
SPI

POWER

OFF

ENABLE

POWER

OFF

CROWN BUS LOOP 1

ENABLE

ODEP

CH1 CH2

IOC
SPI

POWER

OFF

CROWN BUS LOOP 2

How the mixer/multiplexer will be used will deter­mine whether or not it will need to be connected
directly to a host computer. If the unit will be con­nected to the Crown Bus it will not need to be
connected directly to a host computer. The following
circumstances require connection to a host com­puter:

• If a Crown Bus will not be used, the mixer/mul­tiplexer will need to be connected to a host
computer so the software inside the unit can
be configured. Afterward, if manual control is
not required, the host computer can be discon­nected.

• If the mixer/multiplexer must be configured be­fore it is installed into an IQ System, it must be
connected directly to a host computer for con­figuration. The onboard battery of the unit will
maintain its software configuration for up to 60
days without it being plugged into an AC
source.

• If the mixer/multiplexer will be used as an IQ
interface (Option 1) it will need to be con-

.

nected directly to a host computer.

One of the advantages of connecting directly to a
host computer is that a separate IQ interface (IQ­INT) is not required. If you plan to configure the unit

Page 10

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

(+)

131

2514

12

34 5

678

Output handshake

Input handshake

Transmit data –

Ground

Receive data –

Not used

1
2
3
4
5

4
5
2
7
3

Clear to Send (CTS)
Request to Send (RTS)
Receive Data (RXD)
Signal Ground (GND)
Transmit Data (TXD)

PIN PIN

Cable connectors are numbered as they appear from the front.

Macintosh

(RS232)

SMX-6 (RS232)

6,7,8

while it is connected to the Crown Bus, skip ahead
to Section 3.2.

There are two main communication standards sup­ported by the unit for serial communication with a
host computer. They are RS232 and RS422.

RS232 is commonly used with IBM PCs and com­patibles. Because it uses unbalanced signal wiring,
it cannot be used for distances over 50 feet (15.2
m).

RS422 is commonly used with Macintosh comput­ers. It uses balanced signal wiring and can be used
for distances up to 2,000 feet (610 m).

Although uncommon, RS423 communication can
also be used. It uses the unbalanced transmitter
(TXD) wiring of RS232 and the balanced receiver
(RXD) wiring of RS422 to provide signal ground
isolation between the transmit and receive lines.
With a proper cable it can be used over a greater
distance than RS232…but a shorter distance than
RS422. For details contact either Crown Tech. Sup­port or Amcron Tech. Services (see page 22).

The following illustrations show how to wire the two
most common serial cables:

PC (RS232) SMX-6 (RS232)

51

96

Cable connectors are numbered as they appear from the front.

ReceiveData (RXD)

Not used

Transmit Data (TXD)

Signal Ground (GND)

Request to Send (RTS)

Clear to Send (CTS)

PIN PIN

1,4,6,9
2
3
5
7
8

3

Transmit Data (TXD)

2

Receive Data (RXD)

7

Signal Ground (GND)

4

Clear to Send (CTS)

5

Request to Send (RTS)

Fig. 3.2 RS232 Cable Wiring for a PC

Macintosh

(RS422)

678

34 5

12

Cable connectors are numbered as they appear from the front.

Output handshake

Input handshake

Transmit data –

Ground

Receive data –

Transmit data +

Not used

Receive data +

Fig. 3.3 RS422 Cable Wiring for a Macintosh

Rev. 0

PIN PIN

1
2
3
4
5
6
7
8

SMX-6 (RS422)

4
5
2
7
3

10

9

Clear to Send (CTS)
Request to Send (RTS)
Serial In (–)
Signal Ground (GND)
Serial Out (–)
Serial In (+)

Serial Out

131

2514

131

2514

It is also possible to use RS232 to communicate
with a Macintosh computer. Here’s how to wire the
cable:

Fig. 3.4 RS232 Cable Wiring for a Macintosh

Important: Do not use twisted-pair wire for RS232
because it increases crosstalk. Instead use an un­twisted cable or ribbon cable. Twisted-pair wire can
be used for RS422.

3.1.1 Communication Standards and Parameters

Before communication can take place between the
unit and a host computer the communication stan­dard must be selected and the communication pa­rameters must be set with switches accessed
through an opening in the side of the chassis. (Fig­ures 2.2 and 3.5)

Caution: Be sure to disconnect the AC power from
the unit before selecting a different communication
standard or changing the parameters.

IBM PC-compatible computers typically have an
RS232 serial port, so the communication standard
switch should be moved to the right (Figure 3.5).
With a Macintosh host computer, the standard is
usually RS422, and the communication standard
switch should be moved to the left. In the rare event
that RS423 communication is used, set the switch to
the RS422 position.

Setting the communication parameters for RS232
and RS422 serial communication is accomplished
using the six segment baud rate and parity DIP
switch in Figure 3.5. The first four switches select
the baud rate and the last two set the parity. Use the
fastest baud rate possible. The highest baud rate
supported by the unit is 19.2 K baud. Parity check­ing is not presently supported and should be OFF.
The odd/even parity bit doesn’t matter when parity
is switched OFF. The unit has been factory set to 1
stop bit and 8 data bits.

Important: The communication standard and param-

Page 11

IQ ADDRESS

1248163264

12345678

128

OFF

ON

BAUD RATE

& PARITY

BAUD RATE PARITY

123456

COM

STANDARD

RS232RS422

PCMAC

IQ Mixer/Multiplexer Hardware Installation

BAUD RATE & PARITY SETTINGS

123456

19200

9600

BAUD
RATE

PARITY

4800
2400
1200

300
150

ON

OFF

ODD

EVEN

Fig. 3.5 Selecting the Communication Standard and Parameters

eters of the mixer/multiplexer and the host computer
must be the same. Any mismatch will prevent com­munication from taking place.

The communication parameters of the host com­puter are set by the IQ software. This is true for both
PCs and Macintosh computers. Please refer to the
appropriate software manual for details.

Here are some important guidelines when configur­ing serial communication:

• Use the same communication

standard

at each
end. If the unit is set for RS232, the computer
must also be set for RS232. (Refer also to the
appropriate IQ software manual.)

• Use the same communication

parameters

at
each end. The unit and the computer must be
set for the same baud rate and parity check­ing.

• Use the highest baud rate possible but be
aware that

in some PCs cannot function over 9600 baud

the communication circuitry (UART)

.

(IQ mixer/multiplexers can be set as high as

19.2 K baud.)

• If the host computer fails to communicate with
the unit and the communication standard and
parameters are set correctly, try reducing the
baud rate of both the unit and the computer.

• If communication problems persist, check the
serial cable for improper wiring or possible
shorted or broken wires.

• For further assistance call either the Crown
Technical Support Group or Amcron Technical
Services Dept. (see page 22 for telephone
numbers).

3.2 Connecting to the Crown Bus (Step 2)

The Crown Bus is a serial communication loop de­signed to transmit IQ commands and data. As a
communication standard it is independent of the
wiring system used. This flexibility is a great
strength, enabling a Crown Bus loop to be wired
with either fiber optic cabling or with inexpensive
twisted-pair wire, whichever the installation re­quires. A single
Crown Bus loop. To function properly, a Crown Bus
loop must be unbroken.

3.2.1 Setting the IQ Address

Before installing a mixer/multiplexer on a Crown
Bus loop, it must be given a unique IQ address.
This address will be used by the
ever it communicates with the unit.

The 8-segment DIP switch shown in Figure 3.5 is
used to set the IQ address. No two IQ components
of the same model which are connected to the same

IQ System

can have more than one

IQ System

when-

Page 12

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

PIN

1
2
3
4

PIN

1
2
3
4

Input (–)

Input (+)
Output (–)
Output (+)

Input (+)

Input (–)

Cable connectors are numbered as they appear from the front.

1234

Mixer/Multiplexer 1

Output (–)
Output (+)

1

2

34

Mixer/Multiplexer 2

GNDGND

Optional Shield

Crown Bus can have the same address. Suppose,
for example, an
loops as shown in Figure 3.1 and an

IQ System

has two Crown Bus

SMX-6

is
installed in loop 1 and given IQ address 77. No
other

SMX-6

Crown Bus loop 1. However, an

can be given the same address in

SMX-6

can have the
same address if it is installed in loop 2. Different IQ
components can have the same address and be in
the same Crown Bus loop. In the previous example,
an

AMB-5

address 77 because it is not an

could be installed in loop 1 and use IQ

SMX-6

.

A valid IQ address is any number from 1 to 250. Do
not use a number higher than 250 since they are
reserved for special use. An address of ÷0š (zero)
should not be used. The IQ address is determined
by adding the values of each segment of the DIP
switch which is turned on (pushed down). Figure 3.5
shows the value of each DIP switch segment. For
example, if the desired unit address is 1, only
switch 1 should be down. If the desired unit address
is 217, switches 8, 7, 5, 4, and 1 should be down
(128+64+16+8+1=217). See Appendix A for list of
all valid DIP switch settings.

If the IQ interface used is an IQ-INT, the system can
have up to eight separate Crown Bus loops. This will
enable the audio system to be divided into different
zones, each with its own Crown Bus loop. Dividing
the

IQ System

into multiple Crown Bus loops has
advantages and disadvantages which are listed be­low:

Multiloop Advantages

• A break in communication in one loop does not
affect other loops.

• Over 250 IQ components of the same model
can be use in a system.

• The same IQ address can be used more than
once (once per loop per model).

vices (see page 22) for information on adding the
appropriate transceivers.

Here are some guidelines for twisted-pair wiring:

• Use shielded twisted-pair wire at least 26
AWG in size. The wire should be of good qual­ity and should NOT have high capacitance (30
picofarads/foot or less is good). Shielded wire
is recommended for situations where interfer­ence is a problem. (West Penn 452 or an
equivalent wire works well.) The shield serves
two purposes: First, it helps prevent the IQ
data signal from transmitting to nearby audio
wiring. Second, it helps prevent outside RF
from interfering with the data signal. However,
in most cases interference is not a problem
and, since unshielded wire has lower capaci­tance, it is a better choice.

• If shielded wire is used, connect the shield
only to the input connector.

• Add an IQ Repeater for very long
loops…greater than 1,000 feet (305 m)…or
when required by high-capacitance wire. Al­though we recommend adding a repeater for
loops longer than 1,000 feet, it is often pos­sible to go 2,000 feet (610 m) or more. The
most significant characteristic of the wire is its
capacitance. The lower the capacitance, the
longer the loop can be. Unshielded wire typi­cally has less capacitance.

• Never use the ground wire in a mic snake

line.

It may sometimes be convenient to run
Crown Bus data signals to and from stage
monitor amplifiers along unused wire pairs in a
mic snake. If this is done, do not use the
ground wire which is normally connected to pin
1 on an XLR connector or data noise will be

Single Loop Advantages

• The

IQ System

can send and retrieve data

faster in a single loop.

• ÷Real timeš level display of a greater number
of units is possible.

3.2.2 Crown Bus Wiring

The Crown Bus is implemented in IQ mixer/multi­plexers as a 20 milliamp current loop operating at

38.4 K baud so that it can function with inexpensive
twisted-pair wiring. If fiber optic wiring is required
contact Crown Tech. Support or Amcron Tech. Ser-

Rev. 0

Fig. 3.6 Crown Bus Wiring for Removable Barrier Blocks

Page 13

IQ Mixer/Multiplexer Hardware Installation

Crown Bus Barrier Block

Crown Bus 5-pin DIN Input

5

1234

The Crown Bus connector

shown here is the standard

connector found on the back

panel of most mixers and SLM.

PIN

Output (+)
Output (–)

Input (+)
Input (–)

GND

1
2
3
4

The female Crown Bus connector shown

here can be found on the back panel

Optional Shield

4

3

of IQ-INT IIs and most IQ-P.I.P.s.

PIN

5
4
3
2

1

Fig. 3.7 Crown Bus Wiring for 5-pin DIN Input

IQ

POWER

OUT

2

IN

OUT

1

IN

INTERFACE

CROWN BUS

120 VAC

AUX

SERIAL DATA LOOP

60 Hz

CTRL

OUT IN

–

+

–

AUX
CTRL

AUX
CTRL

RS232 / RS422

RS232 / RS422

RS232 / RS422

+

CROWN BUS
SERIAL DATA LOOP

OUT IN

–

+

CROWN BUS
SERIAL DATA LOOP

OUT IN

–

+

–

+

–

+

MULTIPLEXERS

MIC/LINE MIXER/

20 W

120 VAC

60 Hz

20 W

120 VAC

60 Hz

20 W

1

2

(Not Used)
(Not Used)
GND
Input (+)

Input (–)

TO HOST COMPUTER

IN

OUT

6

IN

OUT

5

IN

OUT

4

IN

OUT

3

IN

IQ INTERFACE

AUDIO

ADD 25

AUDIO

0

5

ADD 25

AUDIO

0

5

FOR MIC

STACK

AUDIO

STACK

AUDIO

IN

IN

OUT

OUT

1

2

MAIN BUS

BUS

MAIN

+–

+–

+–

+–

STACK

AUDIO

STACK

AUDIO

IN

IN

OUT

OUT

1

2

MAIN BUS

BUS

MAIN

+–

+–

+–

+–

STACK

AUDIO

STACK

AUDIO

IN

IN

OUT

OUT

1

2

MAIN BUS

BUS

MAIN

+–

+–

+–

+–

IN

6

+–

AUDIO
IN

6

+–

AUDIO
IN

6

+–

IN

-5

0

5

FOR MIC

IN

-5

10

-5

10

-10

-10

15

4

-10

-12

-5

-10

-12

-5

-10

-12

21

15

-12

5

21

-12

21

LMP

LMP

+–

+–

AUDIO

ADD 25

AUDIO

0

5

ADD 25

0

5

FOR MIC

IN

-5

0

5

FOR MIC

IN

-5

10

10

-10

-10

15

4

21

15

-12

5

21

-12

21

LMP

LMP

+–

+–

AUDIO

ADD 25

AUDIO

0

5

ADD 25

0

5

FOR MIC

IN

-5

0

5

FOR MIC

IN

-5

10

10

-10

-10

15

4

21

15

-12

5

21

-12

21

LMP

LMP

+–

+–

SERIAL OUT

Crown Bus 4-pin DIN Output

4

3

2

The female Crown Bus connector shown

here can be found on the back panel

of IQ-INT IIs and most IQ-P.I.P.s.

PIN

(Not Used)
(Not Used)

Output (+)

Output (-)

4
3
2
1

Fig. 3.8 Crown Bus Wiring for 4-pin DIN Output

OUT

8

IN

OUT

7

ADD 25
FOR MIC

10
15

LMP

ADD 25
FOR MIC

10
15

LMP

ADD 25
FOR MIC

10
15

LMP

AUX

AUDIO
IN

3

+–

AUDIO
IN

3

+–

AUDIO
IN

3

+–

SERIAL IN

COMPUTER

ADD 25

AUDIO

ADD 25

AUDIO

0

5

FOR MIC

ADD 25

0

5

FOR MIC

IN

-5

0

5

FOR MIC

10

IN

-5

10

-5

10

-10

15

-10

15

1

-10

-12

-5

-10

-12

-5

-10

-12

DSPI

21

15

-12

2

21

-12

21

LMP

LMP

LMP

+–

+–

ADD 25

AUDIO

ADD 25

AUDIO

0

5

FOR MIC

ADD 25

0

5

FOR MIC

IN

-5

0

5

FOR MIC

10

IN

-5

10

10

-10

15

-10

15

1

21

15

-12

2

21

-12

21

LMP

LMP

LMP

+–

+–

ADD 25

AUDIO

ADD 25

AUDIO

0

5

FOR MIC

ADD 25

0

5

FOR MIC

IN

-5

0

5

FOR MIC

10

IN

-5

10

10

-10

15

-10

15

1

21

15

-12

2

21

-12

21

LMP

LMP

LMP

+–

+–

BALANCED INPUTS

CH–1

CH–2

3

INVERT

NON-

(–)

INVERT

(+)

1

2

GND

1

panel of most mixers and SLM.

Optional Shield

Important: Provide ad­equate cooling if the unit
will be used in a hot envi­ronment. Allow one

empty rack space (1.75
inches or 4.4 centime­ters) between each unit if

CROWN BUS

more than four units will
be stacked in a cabinet.

Each empty rack space
should be sealed with a
blank rack panel to facili­tate proper air flow inside
the cabinet.

Crown Bus Barrier Block

1234

The Crown Bus connector

shown here is the standard

connector found on the back

PIN

1

Output (+)

2

Output (–)

3

Input (+)

4

Input (–)
GND

Page 14

IQ–P.I.P. MODULES

AMPLIFIERS WITH

Figure 3.9 Crown Bus Wiring ÷Loopsš from Output to Input of Each IQ Component

SERIAL OUT

SERIAL OUT

SERIAL IN

DSPI

AUX

SERIAL IN

3

INVERT

NON-

(–)

INVERT

(+)

1

2

GND

BALANCED INPUTS

CH–1

CH–2

3

INVERT

NON-

(–)

INVERT

(+)

1

2

GND

BALANCED INPUTS

CH–1

CH–2

DSPI

AUX

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

Pro audio

equipment

Semi-pro or

consumer

equipment

Dynamic

mic, speech

Condenser

mic, speech

Hot

condenser

mic, speech

Dynamic

mic, music

Hot

condensor

mic, music

Close-miked

dynamic mic,

bass/drums

Close-miked

dynamic mic,

kick drum,
guitar amp

dBm/dBV

dBu

Suggested

Setting

+4 dBm

+4 dBu

–4 (L)

–10 dBV

–8 dBu

+8 (L)

–75 dBV
–73 dBu

+21 (M)

–65 dBV
–63 dBu

+11 (P)

–45 dBV

–43 dBu

+18 (P)

–55 dBV
–53 dBu

+21 (M)

–25 dBV
–23 dBu

–2 (P)

–15 dBV
–13 dBu

–12 (M)

–5 dBV
–3 dBu

–12 (M)

or

+3 (L)

0 dBm = 0.775 VRMS with a 600 ohm load, 0 dBV = 1 VRMS, 0 dBu = 0.775 VRMS

added to the audio lines. Use only the signal
lines which normally connect to pins 2 and 3 of
the XLRs.

Note: Because typical mic cables
have high capacitance, the maximum possible
Crown Bus loop distance will be less.

Outside RF interference is seldom a problem for a
Crown Bus loop…especially if shielded twisted-pair
wire is used. However, there are extreme situations
when fiber optic wiring is recommended. For ex­ample, locating a Crown Bus loop next to an AM
radio transmission line may require fiber optic ca­bling. An extremely long Crown Bus loop distance
(greater than 10 miles) may also require fiber optic
cabling.

Some examples of twisted pair wiring follow. Figure

3.6 shows point-to-point wiring for the Crown Bus
using two female removable barrier block connec­tors:

Some IQ components use separate 5-pin and 4-pin
DIN connectors for Crown Bus input and output
wiring. Connecting to them is shown below:

The IQ components in each Crown Bus loop are
wired in series. The output of one IQ component
÷loopsš to the input of the next and so on. This is
shown in Figure 3.9.

3.3 Connecting the Audio Ins & Outs (Step 3)

IQ mixer/multiplexers have 6 mic/line inputs and
2 stack inputs. (Input 6 of the
for ambient sensing and is discussed in Section

3.3.2.) For output, there are two audio channels that
feed two main and two auxiliary bus outputs.

3.3.1 Mic/Line Inputs

Three-terminal removable barrier block connectors
are provided for the audio inputs. Each input has an
input selector switch. Slide it to the left (M) for
microphone signal levels up to +7 dBu (0 dBu =

Microphone

Note: If more than one

input is driven from the same

Floating

source

Output

source equipment, connect only

one shield at the source

–

equipment chassis.

+

2-wire line cord

(or battery power)

AMB-5

Shield connected

at both ends

INPUT

INPUT

is dedicated

+–

+–

AUDIO
IN

1

-10

ADD 25

0

5

FOR MIC

-5

10

15

21

-12

LMP

+–

Fig. 3.10 An Audio Input Section

Rev. 0

Fig. 3.11 Suggested Audio Input Gain Control Settings

Grounded

source

Shield not connected
at this end

–

Output

+

3-wire grounded line cord

(or other ground connection)

Fig. 3.12 Balanced Audio Input Wiring

INPUT

+–

Page 15

IQ Mixer/Multiplexer Hardware Installation

0.775 volts). Select the center position (L) for line
level signals up to +32 dBu. Slide it to the right (P)
to provide 44 VDC to mics requiring phantom
power.

Each input has a screwdriver-set, calibrated gain
control to compensate for different input source
levels. The slot on the control shaft points to the
gain setting. The settings are labelled for line-level
input. Add 25 dB to the scale if the inputs are
switched for microphone level signals.

Use a screwdriver to adjust the gain pot so that the
input signal level plus gain equals roughly 0 dBu.
You will need to know, or estimate, the level of the
input source. Setting the source signal level to ap­proximately 0 dBu will provide 20 dBu of headroom
in the input preamp. Some recommended settings
follow in Figure 3.11:

Floating

source

Output

+

Grounded

source

Output

+

Floating

source

Output

+

Shield connected
to ground terminal

2-wire line cord

(or battery power)

Shield not connected
at this end

3-wire grounded line cord

(or other ground connection)

Shield connected to both negative
(–) and ground input terminals

INPUT

INPUT

+–

+–

Twin-lead shielded cable

Figures 3.12-13 show the normal wiring for bal­anced and unbalanced inputs. It is also possible to
parallel the inputs of multiple units to increase the
number of mixer outputs. For example, the inputs of
two 6x2

MPX-6s

can be paralleled to create a 6x4

mixer. This technique is described in Section 3.3.6.
Balanced sources should be wired as shown below

in Figure 3.12. Notice that the shield is not con­nected to the chassis ground of the source if the
source is also connected to the AC ground (that is,
it has a grounded AC plug). This prevents unwanted
ground loops.

Unbalanced sources should be wired as shown
below in Figure 3.13. The examples in Figure 3.13
are grouped according to whether twin-lead
shielded wire or single-conductor coax (and twisted
pair) wire is used.

3.3.2

AMB-5

Ambient Sensing Input

SENSE
IN

ADD 25

0

5

FOR MIC

-5

10

-10

15

21

-12

LMP

+–

Fig. 3.14 Sensing Input Section

In addition to its automatic mixing capabilities, the

AMB-5

also has the ability to adjust the output level
of Channel 1 to the ambient sound level. (Remem­ber, Channel 2 functions only as an

MPX-6

.) It does
this with its sensing input (input 6). This is an
extremely useful feature. With an

AMB-5

the paging
level at a train station can be automatically adjusted
so pages can be heard over the roar of an incoming
train and yet quieted to an appropriate level during
periods of softer ambient sound levels.

Grounded

source

Output

+

Page 16

2-wire line cord

(or battery power)

3-wire grounded line cord

(or other ground connection)

INPUT

+–

Input ground
terminal not used

INPUT

+–

Fig. 3.13 Unbalanced Audio Input Wiring

The sensing input section of the back panel is
shown in Figure 3.14 below. It has the same fea­tures as the other mic/line inputs: input gain control
and input level switch.

The obvious way to use the sensing input is to
connect a microphone (such as a Crown PZM-6D) to
it and locate the microphone so that it can accu-

or twisted pair

rately receive the ambient sound level. Great care

Single-conductor coax

must be taken in the placement of the ambient sens­ing microphone so that it is not too close to the
loudspeakers being driven by the system. If it is too
close, the system could go into feedback oscillation.

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

It is also possible to connect more than one ambient
sensing microphone to the sense input. This can be
accomplished by taking advantage of the manual
mixing function of Channel 2. Simply connect each
ambient sensing microphone to one of the five regu­lar inputs of the

AMB-5

and use the IQ software to
assign each of them to Channel 2 only. Switch the
sense input to the line-level position (L) and connect
the main audio output of Channel 2 to it. Use the IQ
software to control the level of the ambient sensing
microphones. The microphones which are located in
more critical areas can be set to a higher level so
they will trigger the level controller first.

Be sure the microphone has adequate sensitivity for
the spectral content of the ambient sound. For ex­ample, a microphone with a bandwidth designed
solely for speech reinforcement may not have ad­equate low-frequency sensitivity to pick up the low­frequency noise of machinery in a factory.

3.3.3 Audio Outputs

Three-terminal removable barrier block connectors
are provided for audio output (Figure 3.15). Both a
main and bus output are provided for each of the
two mixer channels. They are balanced and can
drive 1200 ohms or more to +26 dBu or 600 ohms to
+20 dBu. Each bus output can drive any number of
inputs within this impedance range.

The main audio outputs are provided for connection
with other audio equipment such as power amplifi­ers. They can also be stacked with the outputs of
other mixer/multiplexers to increase the number of
mixer inputs. For example, two 6x2

MPX-6s

can be
stacked to create a 12x2 mixer. This is described in
Section 3.3.4.

The bus outputs are turned on or off by relays and
function like the aux send outputs on a conventional
mixing console. They are switched on or off by the

IQ System

. This special design allows many bus
outputs to be connected to a common audio bus in a
multiple-zone network (like a large airport paging

system). Because the bus outputs are controlled by
the

IQ System

, they can be kept off until they are
actually used, preventing too many of them being
on at the same time and loading down a common
audio bus network.

The versatile bus outputs can be used for any audio
system, small or large, where switchable outputs
are desired, such as switchable recording outputs.

Both main and bus outputs are wired the same way.
Balanced output wiring is shown below.

Notice that the shield is not connected to the output
ground terminal if the load is connected to AC
ground. This prevents unwanted ground loops. Un­balanced output wiring is shown next.

Shield connected at both ends

Floating

load

+

Output

–

OUTPUT

+–

Shield not connected
at this end

2-wire line cord

(or battery power)

Grounded load

(power amp)

+

Output

–

OUTPUT

+–

Fig. 3.16 Balanced Audio Output Connections

OUTPUT

3-wire grounded line cord

(or other ground connection)

Twin-lead shielded cable

Shield connected to ground
terminal of load only

+

Load

Output

+–

Rev. 0

AUDIO
OUT

1

STACK
IN

MAIN BUS

+–+–

Fig. 3.15 Audio Output Section

Single-conductor coax
or twisted pair

OUTPUT

Load

+

Output

+–

Fig. 3.17 Unbalanced Audio Output Connections

Page 17

IQ Mixer/Multiplexer Hardware Installation

3.3.4 Stack Inputs

The stack in jacks (Figure 3.15) enable the audio
inputs to be increased by stacking 2, 3, or more
mixer/multiplexers to create a 12x2, 18x2 or wider
mixer. Use 2-conductor shielded cable to route the
signal from the main output of one unit to the stack
input (RCA phono jack) of the second unit. This is
shown in Figure 3.19. The stack input routes the
signal directly to the output of the second unit. Use
the outputs of the last unit in the stack for connec­tion to amplifiers or other external audio equipment.

Note: The level of each signal on the stacked output
bus is controlled by the unit having the signal as an
input.

Stacking mixer/multiplexers can create an almost
unlimited number of inputs. However, there will still
only be two main and two auxiliary bus outputs for
connection to other equipment. See Section 3.3.5 to
find out how to increase the number of outputs.

The correct way to wire stacked units is shown
below:

12 INPUTS

MAIN

STACK

OUT

IN

SMX-6 SMX-6

STACKED

OUTPUTS

Fig. 3.18 A 12x2 Mixer Using 2 Mixer/Multiplexers

2
OUTPUTS

3.3.5 Paralleling Inputs

When using more than one unit, the inputs may be
wired in parallel to increase the number of outputs
that a source can drive. This is shown in Figures

3.20-21. For example, the audio signal in Figure 21
which feeds Input 1 is available to the outputs of
both units, creating a 6x4 mixer.

Important: If the source is a microphone which re­quires phantom power (P) select it only at the first
input. Switch all other parallel inputs to mic (M).

Note: When mixer inputs are paralleled, the total
input impedance will drop by 1¦N where N is the
number of inputs to be connected. Depending on
the signal source, this may place a limit on the
number of possible outputs.

6 INPUTS

SMX-6

PARALLELED

INPUTS

MPX-6

MPX-6

MPX-6

Fig. 3.20 A 6x8 Mixer Using 4 Mixer/Multiplexers

8
OUTPUTS

First

Unit

AUDIO
OUT

2

MAIN

STACK
IN

BUS

AUDIO
OUT

1

MAIN BUS

STACK
IN

+–+–+–+–

3-pin output connector

(–) No connection
2-conductor shielded cable

Connect ground ( ) from
output to phone plug shield

Phone (RCA) plug

Second

Unit

AUDIO
OUT

2

MAIN

STACK
IN

BUS

AUDIO
OUT

1

MAIN BUS

STACK
IN

+–+–+–+–

Fig. 3.19 Stacking the Outputs of Multiple Units

Page 18

To signal

source

First

Unit

AUDIO
IN

2

0

-5

-10

-12

5

ADD 25
FOR MIC

10
15

21

LMP

AUDIO
IN

1

+

ADD 25

0

0

5

FOR MIC

-5

10

-10

15

21

-12

–

LMP

+–

Do NOT tie ground terminals

of parallel inputs together

2-conductor shielded cable

Connect shield to ground

terminal of input ONLY

Second

Unit

AUDIO

0

IN

-5

-10

2

-12

+– +–

5

ADD 25
FOR MIC

10
15

21

LMP

AUDIO
IN

1

ADD 25

0

0

5

FOR MIC

-5

10

-10

15

21

-12

LMP

No
phantom
power

Fig. 3.21 Paralleling the Inputs of Multiple Units

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

By using several units and a combination of parallel
inputs and stacked outputs, larger mixing configu­rations (12x8, 24x4, etc.) can be created as shown
below:

12 INPUTS

MAIN

STACK

OUT

IN

SMX-6 SMX-6

PARALLELED

INPUTS

MPX-6 MPX-6

8
OUTPUTS

MPX-6

MPX-6

6x8

STACKED
OUTPUTS

MPX-6

MPX-6

6x8

Fig. 3.22 A 12x8 Mixer Using 8 Mixer/Multiplexers

3.4 Connecting Auxiliary Devices (Step 4)

Auxiliary devices, external to the
turned on and off using the Aux port on the mixer/
multiplexer. For example, auxiliary cooling for an
amplifier equipment rack can be controlled using
the Aux port to control a solid state relay which in
turn controls a cooling fan. This is shown below in
Figure 3.23:

IQ System

, can be

maximum of 16 mA. This is shown below in Figure

3.24.
Notice in Figure 3.24 that the Aux port also has the

capability to receive a signal across pins 2 (+) and
1 (ground). It is a high impedance input and in­cludes a pull-down resistor.

+24 V

1.5 K ohm

+5 V

20 K

(LSTTL)

100 K

Fig. 3.24 Internal Auxiliary Circuit

10 V Zener

AUX

CONNECTOR

OUT

2

IN

13

GND

AUX

CONNECTOR

1

3

2

110 VAC

GND

10 V

INPUT

+–

SOLID
STATE
RELAY

(C 7308-7)

AUXILIARY

EQUIPMENT

Fig. 3.23 Sample Auxiliary System Wiring

The solid state relay shown (Crown part number C
7308-7) can be ordered from Crown.

The Aux port uses a male 3-pin mini XLR connector
which is located above the DB25 connector (Figure

2.1). Use a Switchcraft® TA3F cable connector or
equivalent to make the connection.

When the Aux port is turned on by the

IQ System

it
provides 10 VDC across pins 3 (+) and 1 (ground).
An internal 1500 ohm resistor limits the current to a

Rev. 0

Page 19

IQ Mixer/Multiplexer Hardware Installation

4 Options

There are two optional uses for mixer serial ports.
The first is direct RS232/RS422 communication with
the unit where the unit is its own interface and
interface for any connected components. The sec­ond, called Crown Local Net, applies only to SMX-6
mixers.

4.1 A 1-Loop IQ Interface

The serial port allows any of the mixer models to
serve a an IQ interface between a host computer
and a single Crown Bus loop.

Note: While 250 IQ components of each type can be
controlled on a single Crown Bus loop, it is recom­mended that no more than 20 units be connected to
an AMB-5 or SMX-6. This is because of the tremen­dous timing demands on their microprocessors.
More than 20 IQ components may cause timing
problems. The MPX-6 has no such limitations.

Note: While the mixers may be used as a system
interface, they do not support IQ2 protocol as an
interface. The only components that an IQ mixer
may used as interface for are other mixers, MRX
relay modules, and IQ-PIP-AP modules.

With the built in serial port an IQ mixer can eliminate
the need for an external IQ Interface (IQ-INT II) in a
small system. The mixer connects directly to the
host computer via the DB25 serial connector.
Switches accessed through the side of the chassis
are used to select the serial interface configuration,
parity and baud rate. See Section 3.1 for specific
wiring and switch instructions.

4.2 Crown Local Net

Crown Local Net is available only for an
enables multiple
Crown Local Net (CLN). This is a pseudo-RS422
communication loop designed for local communica­tion between IQ components apart from the Crown
Bus.

SMX-6s

the total number of open mics in the system as well
as their individual ducking priorities. In this way,
one

SMX-6

by other
prevent feedback or implement priority switching
(ducking) of mics.

SMX-6s

SMX-6s

can use this option to communicate

will know how many mics are being used

and can take appropriate action to

to be interconnected via a

Note: Because RS232/422 and CLN use the same
DB25 connector, they cannot be used at the same

SMX-6

. It

time. This means that SMX-6s will need to be con­nected to a Crown Bus via an external IQ interface
for setup of a CLN.

4.2.1 Wiring the Crown Local Net

A Crown Local Net is a serial loop (Figure 4.1). With
two exceptions, a Crown Local Net loop is wired the
same as standard RS422 wiring. Exception 1: The
Crown Local Net does not use handshaking, there­fore pins 4 and 5 (RTS/CTS) are not used. Exception
2: When more than 2 components will be communi-

CLN Interface (RS422)

Fig. 4.1 A Crown Local Net RS422 Serial Loop

cating on a Crown Local Net, two cables must be
connected to each DB25 connector…one for incom­ing data and one for outgoing data. With two units
on a Crown Local Net, only one cable is attached to
the connector.

Figure 4.2 shows the wiring for a 3-unit Crown Local
Net. If more units are desired, simply add another
unit and follow the same pattern for wiring.

CLN Interface (RS422)

CLN Interface (RS422)

Note: Pin
7 should not be used as a ground if the units are
already properly grounded. The wire used for
RS422 communication is usually unsuitable for use
as a ground.

Important: The Crown Local Net must make a com­plete loop. If the last unit in a group is not connected
to the first unit, the system will not function.

Important: The Crown Local Net depends on proper
IQ address assignments, even if the system will not
be installed with a Crown Bus loop. Each unit in a
Crown Local Net must have a different IQ address.

See Section 3.2 for details.
As more diverse IQ communications are needed,

the Crown Local Net will be available to move infor­mation directly between IQ components without af­fecting the performance of a host computer.

Page 20

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

)

(

)

SMX-6 #1 SMX-6 #2 SMX-6 #3

Pin

2

3

7

9

10

Pin

2

3

(Optional) (Optional)

Pin 2 Serial In (–)
Pin 3 Serial Out (–)
Pin 7 GND (Optional

7

9

10

(Optional)

Pin 9 Serial Out (+)
Pin 10 Serial In (+)

All other pins are not used.

Fig. 4.2 Crown Local Net Wiring

Pin

2

3

7

9

10

Rev. 0

Page 21

IQ Mixer/Multiplexer Hardware Installation

5 Service

Your unit has very sophisticated circuitry which
should only be serviced by a fully trained techni­cian. This is one reason why each unit bears the
following label:

CAUTION: TO PREVENT ELECTRIC SHOCK DO
NOT OPEN. NO USER SERVICEABLE PARTS IN­SIDE. REFER SERVICING TO A QUALIFIED
TECHNICIAN.

5.1 International Service

Service may be obtained from an authorized Im­porter Service Center. (Contact your local Importer
or our office for a list of authorized service centers.)
Simply present your bill of sale as proof of purchase
along with the defective unit to an authorized Ser­vice Center to obtain service. They will handle the
necessary paperwork and repair.

Remember to transport your unit in the original fac­tory pack. Amcron will pay the surface shipping
costs both ways for warranty service to the autho­rized service center nearest you after receiving
copies of all shipping receipts. You must bear the
expense of all taxes, duties, and customs fees
when transporting the unit.

5.2 Crown Service

Service may be obtained in one of two ways: from
an authorized Crown Service Center or from the
factory. You may choose either. It is important that
you have your copy of the bill of sale as your proof
of purchase.

5.2.1 Service at a Crown Service Center

This method usually saves you the most time and
effort. Simply present your bill of sale along with the
defective unit to an authorized Crown Service Cen­ter. They will handle the necessary paperwork and
repair. Remember to transport your unit in the origi­nal factory pack.

5.2.2 Crown Factory Service

To obtain factory service, fill out the

mation Card

along with proof of purchase and the defective unit
to the Crown factory. Enclose a letter explaining the
nature of the problem and what service you would
like. Include your return shipping address and tele­phone number.

The unit must be shipped in the original factory
pack. If you no longer have the original shipping

container, contact us and we will promptly send you
a replacement.

Crown will pay ground shipping costs both ways in
the United States for warranty service after receiv­ing copies of all shipping receipts. Shipments
should be sent UPS ground. (If the unit is under
warranty, you may send it C.O.D. for the cost of the
shipping.) The factory will return your serviced unit
via UPS ground. Please contact our Shipping De­partment (219-294-8246) if other arrangements are
necessary.

in the back of this manual and send it

Service Infor-

Page 22

Crown Technical Support Group

POB 1000

Elkhart, Indiana 46515-1000 U.S.A.

Phone: [phone]

or: 1-219-294-8200

Fax: [phone]

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

6 Technical Information

The

IQ System

both monitor and control complete sound systems
during operation. The system began with amplifier
control using plug-in IQ-P.I.P. modules in each am­plifier and an IQ-INT to connect the system to a host
computer. The next major advance was the
the first intelligent mixer/multiplexer able to mix and
route audio inputs under computer control. Now, the

SMX-6

signal processing and have the capability of mixing
audio signals automatically.

and

6.1 Audio

6.1.1 Input Section

Each audio input signal first passes through a bal­anced filter designed to eliminate RF interference.
The RF filters are a balanced network of chokes,
ferrite beads and capacitors that attenuate both
common-mode and differential-mode signals above
500 kHz. Optional input isolation transformers can
also be added by the factory.

The signal then enters the input switching circuit.
This circuit can insert a 25-dB pad for line level
signals or apply phantom power to the input termi­nals (44 volts through two 6810-ohm resistors). The
signal is filtered again to eliminate lower-frequency
RF energy such as interference from the AM broad­cast band. The signal then goes to the preamp
stage.

Each of the six input preamplifier stages is a bal­anced circuit providing from 13 to 46 dB of voltage
gain. The preamp consists of a pair of low-noise
transistors followed by a high performance op-amp.
The transistors, in effect, convert the input voltage
to a current while maintaining reasonably high input
impedance. Their transconductance (output current
divided by input voltage) depends on the setting of
the gain control. The op-amp then converts the
current back to a voltage to drive subsequent cir­cuits.

was developed to provide a way to

AMB-5

sensing mixers offer advanced

MPX-6

ing upon the model). Levels can be set in 1¦2 dB
increments from 25 dB gain to 100 dB attenuation
(which is considered off).

6.1.3 Output Section

,

The two mix buses are sent to the corresponding
main output and auxiliary bus output stages. All
output stages are active, balanced and can drive
1200 ohms to +26 dBu or 600 ohms to +20 dBu. The
auxiliary bus output stages have internal relay con­tacts which can connect or disconnect the signal to
the auxiliary bus output connector. These contacts
are controlled by the host computer and thus allow
programmed signal routing. Optional output isola­tion transformers can also be added by the factory.

6.1.4 Level Sense Circuits (

The output of each input preamp and each mix amp
is monitored by a corresponding level detector.
Each level detector tracks the peak level of the
signal and releases with a time constant of about 85
ms. The eight levels are sent to a multiplexer and
the A/D converter.

AMB-5

and

SMX-6

6.2 Control and Interface Section

The host computer communicates with the unit mi­croprocessor either through an outboard IQ inter­face (like an IQ-INT) via the Crown Bus, or directly
through the RS232/RS422 port. Each unit acts only
on commands with an address matching its own.

6.2.1 Crown Bus Interface

The serial loop (Crown Bus) connections on the unit
are made with an opto-isolated 4-pin removable
barrier block connector and a ground stud for the
optional connection of shielded wire. To prevent
ground loops, only the input cable’s shield should
be connected. These connections conform to

System

to control numerous IQ components with the same
computer program.

standards, which allow the host computer

only)

IQ

6.1.2 VCA Sections

Each preamplifier output drives two VCAs which
then drive the two current-summing mix buses. The
stack inputs also feed into the mix buses. The
VCA’s derive their control voltages from a multi­plexer circuit driven from the microprocessor. The
microprocessor uses onboard
from a host computer to control the VCAs (depend-

Rev. 0

algos

or commands

6.2.2 RS232/RS422 Interface

Depending on selected options, the DB25 connector
can be used to communicate directly with the host
computer for setup or control of a Crown Bus loop,
or (

SMX-6

Local Net. A switch selects either RS232 or RS422
operation.

only) for connection to an RS422 Crown

Page 23

IQ Mixer/Multiplexer Hardware Installation

6.2.3 D/A Converter

To set channel gain levels, a digital-to-analog con­verter continuously converts all gain settings to
control voltages. An analog demultiplexer sends the
appropriate control voltages to each of the twelve
VCAs.

6.2.4 Log Amp and A/D Converter

The A/D converter scans through an eight-channel
multiplexer to read the input and output signal lev­els. When a channel is selected, the signal is sent
through a logarithmic amplifier for increased dy­namic range. This analog voltage is then converted
to a binary number that the microprocessor can
read. The processor can then mathematically in­crease detector time constants, perform averaging
or other response functions.

6.2.5 Auxiliary Port

Auxiliary devices such as supplemental cooling
fans can be remotely controlled via the AUX output
on the unit. When the auxiliary control feature is
turned on by the host computer, 10 VDC is supplied
across pin 3 and pin 1 (ground) of the male 3-pin
AUX connector. This port can control solid state
relays, and since it has a current-limit resistor (16
mA max.), it can directly drive an LED or opto­coupler.

The AUX input function is used by applying a 5-30
VDC signal to pin 2 (with pin 1 as ground). A high or
low signal here will be communicated to the host
computer. A logic low can be less than 0 volts
(negative); the signal is internally clamped for cir­cuit protection.

Page 24

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

INPUT 1

BALANCED

BUCHANAN

CONNECTOR

INPUT 2

BALANCED

BUCHANAN

CONNECTOR

INPUT 3

BALANCED

BUCHANAN

CONNECTOR

INPUT 4

BALANCED

BUCHANAN

CONNECTOR

INPUT 5

BALANCED

BUCHANAN

CONNECTOR

**INPUT 6

BALANCED

BUCHANAN

CONNECTOR

STACK INPUT 1

M/L/P SWITCH

PRE-AMP

GAIN POT

(-12 to +21dB)

M/L/P SWITCH

PRE-AMP

GAIN POT

(-12 to +21dB)

M/L/P SWITCH

PRE-AMP

GAIN POT

(-12 to +21dB)

M/L/P SWITCH

PRE-AMP

GAIN POT

(-12 to +21dB)

M/L/P SWITCH

PRE-AMP

GAIN POT

(-12 to +21dB)

M/L/P SWITCH

PRE-AMP

GAIN POT

(-12 to +21dB)

P = +25dB/+44VDC
M = +25dB
L = 0 dB

*INPUT

SENSOR

TO

CPU

P = +25dB/+44VDC
M = +25dB
L = 0 dB

*INPUT

SENSOR

TO

CPU

P = +25dB/+44VDC
M = +25dB
L = 0 dB

*INPUT

SENSOR

TO

CPU

P = +25dB/+44VDC
M = +25dB
L = 0 dB

*INPUT

SENSOR

TO

CPU

P = +25dB/+44VDC
M = +25dB
L = 0 dB

*INPUT

SENSOR

TO

CPU

P = +25dB/+44VDC
M = +25dB
L = 0 dB

*INPUT

SENSOR

TO

CPU

VCA

1-1

VCA

1-2

VCA

2-1

VCA

2-2

VCA

3-1

VCA

3-2

VCA

4-1

VCA

4-2

VCA

5-1

VCA

5-2

VCA

6-1

VCA

6-2

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

FROM

CPU

SUMMING

MIX BUS 1

SUMMING

MIX BUS 2

*FROM

OUTPUT

SENSORS

*FROM

INPUT

SENSORS

ACTIVE
BALANCE
OUTPUT
AMP

FROM

CPU

ACTIVE
BALANCE
OUTPUT
AMP

ACTIVE
BALANCE
OUTPUT
AMP

FROM

CPU

ACTIVE
BALANCE
OUTPUT
AMP

TO

TO BUS

VCAs

RELAYS

CPU

(MICRO-

PROCESSOR)

MAIN 1

OUTPUT

BALANCED
BUCHANAN

CONNECTOR

BUS 1

BALANCED

RELAY

BUCHANAN

CONNECTOR

BUS 1

OUTPUT

MAIN 2

OUTPUT

BALANCED
BUCHANAN

CONNECTOR

BUS 1

BALANCED

RELAY

BUCHANAN

CONNECTOR

BUS 2

OUTPUT

RS232/RS422 or
Crown Local Net

DB25

CROWN BUS

4-PIN

BUCHANAN

COMMUNICATION

123456

12345678

3-PIN

MINI XLR

STANDARD

BAUD RATE

& PARITY

IQ ADDRESS

AUX PORT

STACK INPUT 2

*Sensors not present on MPX-6
**Ambient sensing input on AMB-5

Rev. 0

*OUTPUT

SENSOR

CPU

TO

CPU

TO

*OUTPUT

SENSOR

MEMORY
BATTERY

BACKUP

Fig. 6.1 General IQ Mixer Block Diagram

POWER

SUPPLY

DSPI

ENABLE

Page 25

IQ Mixer/Multiplexer Hardware Installation

7 Specifications

7.1 General

Protection: Audio outputs can be shorted indefi­nitely without causing damage. If communication is
lost, the unit will continue functioning as pro­grammed. If power is interrupted, the unit will func­tion as programmed before the AC failure after the
power is restored.

Controls: DIP switches and a slide switch are ac­cessible from the right side of the unit for setting the
communication format, baud rate, parity and Crown
Bus address. Each audio input has a 3-position se­lector (mic/line/phantom-powered mic) and a cali­brated gain control.

Display: A red Enable LED lights when power is ap­plied to the unit. A yellow DSPI (Data Signal Pres­ence Indicator) LED lights when the appropriate
command is sent from the system computer or
whenever the unit is receiving data.

Connectors

Audio inputs and outputs: 3-pin male removable
barrier block connectors. Buchanan® type
SSB4L03S cable connector or equivalent supplied.

Crown Bus serial communication: 4-pin male re­movable barrier block connector and chassis
ground stud. Buchanan type SSB4L04S cable con­nector or equivalent supplied.

Aux control: 3-pin Switchcraft TB3M. Mates with
Switchcraft TA3F cable connector or equivalent.

RS232/422/Crown Local Net: Female DB25.
Stacking inputs: Phono (RCA) jacks.
Auxiliary Control: Output ON applies 10 VDC to pin

3. Input ON is caused by applying 5 to 30 VDC at
pin 2. Pin 1 is ground reference.

Power Requirements: 120 VAC, 60 Hz, 20 W.
Dimensions: 19 inches (48.3 cm) wide for standard

rack mounting, 1.75 inches (4.4 cm) high, 9.8
inches (24.9 cm) deep behind mounting surface,

0.15 inches (3.8 mm) deep in front of mounting sur­face.

Weight: 8 lbs 13 oz (4 kg).
Finish: Black splatter-coat chassis and front panel.
Construction: 16-ga. steel chassis, 18-ga. steel

cover, 0.125-inch (3.2 mm) aluminum front panel.

7.2 Audio

Input Type: Active differential, transformers op­tional.

Input Impedance: Microphone: 4 kohms nominal.
Balanced Line: 20 kohms. Unbalanced Line: 13
kohms.

Maximum Input Level: Microphone: +7 dBu. Line:
+32 dBu (0 dBu = .775 Vrms).

Phantom Power: 44 VDC through two 6810-ohm re­sistors, switchable at each mic input.

Common Mode Rejection Ratio: (Typical) 60 Hz­1 kHz: 55 dB. 20 Hz-20 kHz: 45 dB.

Output Type: Active balanced, optional transform­ers. For unbalanced operation, leave the "–" terminal
open.

Output Impedance: 50 ohms per side, 100 ohms bal­anced.

Maximum Output Level: +26 dBu balanced.
Maximum Gain: Mic input: 77 dB. Line input: 52 dB.
Frequency Response: +0/–1 dB from 20 Hz to 20

kHz.
Harmonic Distortion: Less than 0.05% at +4 dBm

output. Less than 0.15% at +20 dBm output, 20 Hz
to 20 kHz measured at mic input with 40 dB gain.

Noise: Output noise, all inputs off: –80 dBu (106 dB
below rated output). Output noise, one line input at
0 dB gain: –80 dBu. Equivalent input noise, mic in­put, 46 dB gain, 150-ohm source: –125 dBu. (Specs
are typical, unweighted, for 20 Hz to 20 kHz.)

Crosstalk: Adjacent inputs/outputs at 1 kHz: better
than –80 dB. Adjacent inputs/outputs from 20 Hz to
20 kHz: better than –65 dB.

Page 26

Rev. 0

IQ Mixer/Multiplexer Hardware Installation

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

1

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

2

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF

3

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON

4

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

5

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

6

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

7

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

8

IQ Address Switch

0
1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

Address

IQ

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

1

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

2

OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

3

ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF

4

OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON

5

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

6

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

7

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

8

IQ Address Switch

42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

Address

IQ

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

1

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

ON
ON

OFF
OFF

2

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON
ON
ON

OFF
OFF
OFF
OFF

ON
ON

3

OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON

4

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

5

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

6

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

7

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

8

IQ Address Switch

84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125

Address

IQ

Appendix A

This Appendix contains look-up tables for every
valid IQ address. The valid address are 1 to 250. Do

not use an address number higher than 250!

Addresses above 250 are reserved for special
system use.

Rev. 0

Remember: No two IQ components of the same
type which are connected to the same Crown Bus
can have the same address.

To use the IQ address tables, simply find the
address you want and set the IQ address switch of
the IQ mixer/multiplexer card as shown. See
Section 3.2.1 also.

Fig. A.1 IQ Address Switch Settings from 0 to 125

Page 27

IQ Mixer/Multiplexer Hardware Installation

IQ

Address

126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167

IQ Address Switch

1

2

3

4

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

5

ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON

IQ

6

7

ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

8

OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

Address

168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209

IQ Address Switch

1

2

3

4

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

5

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

IQ

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

8

Address

210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250

6

7

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

IQ Address Switch

1

2

3

4

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

ON

OFF

OFF

ON

ON

ON

OFF

ON

ON

OFF

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

5

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

6

7

8

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

Page 28

Fig. A.2 IQ Address Switch Settings from 126 to 250

Rev. 0