Crown IQSLM-8 Owners manual

POWERDATA

IMPEDANCE RESPONSE

FREQUENCY RESPONSE

PASS / FAIL INDICATORS

12345678

PASS: GREEN / FAIL: RED

System and Load Monitoring IQ System Component

© 1999 by Crown International, Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone:
219-294-8000. The
trademark and

Crown

IQ–SLM-8

®

,

IQ System

is produced by Crown International, Inc. Trademark Notice:

®

and

Com-Tech

®

are registered trademarks of Crown International, Inc.

Other trademarks are the property of their respective owners.

IQ2

™

is a

Printed on

recycled paper.

125120-3

12/99

3

YEAR

THREE YEAR

FULL WARRANTY

3

YEAR

WORLDWIDE

The Crown Audio 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
of purchase by the original purchaser (the “warranty period”) 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.

1

Note: If your unit bears the name “Amcron,” please substitute it for the

name “Crown” in this warranty.

ITEMS EXCLUDED FROM 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. 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.

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.

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.

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.

No action to enforce this Crown 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 CROWN PRODUCTS.

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

SUMMARY OF WARRANTY

1

product, for a period of three (3) years from the date

WHAT THE WARRANTOR WILL DO

HOW TO OBTAIN WARRANTY SERVICE

DISCLAIMER OF CONSEQUENTIAL

AND INCIDENTAL DAMAGES

WARRANTY ALTERATIONS

DESIGN CHANGES

LEGAL REMEDIES OF PURCHASER

9/90

NORTH AMERICA

The Crown Audio 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 period”) that the new Crown product is free of defects in materials
and workmanship. We further warrant the new Crown product regardless of the
reason for failure, except as excluded in this 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: 219-294-8301

SUMMARY OF WARRANTY

WHAT THE WARRANTOR WILL DO

HOW TO OBTAIN WARRANTY SERVICE

WARRANTY ALTERATIONS

DESIGN CHANGES

LEGAL REMEDIES OF PURCHASER

9/90

IQ–SLM-8 System and Load Monitoring IQ System Component

Important Safety Instructions

1) Read these instructions.

2) Keep these instructions.

3) Heed all warnings.

4) Follow all instructions.

5) Do not use this apparatus near water.

6) Clean only with a dry cloth.

7) Do not block any ventilation openings. Install in ac­cordance with the manufacturer’s instructions.

8) Do not install near any heat sources such as radia­tors, heat registers, stoves, or other apparatus that
produce heat.

9) Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding­type plug has two blades and a third grounding
prong. The wide blade or the third prong is pro­vided for your safety. If the provided plug does not
fit into your outlet, consult an electrician for replace­ment of the obsolete outlet.

10) Protect the power cord from being walked on or
pinched, particularly at plugs, convenience recep­tacles, and the point where they exit from the appa­ratus.

11) Only use attachments/accessories specified by the
manufacturer.

12) Use only with a cart, stand, bracket, or table speci­fied by the manufacturer, or sold with the appara­tus. When a cart is used, use caution when moving
the cart/apparatus combination to avoid injury from
tip-over.

13) Unplug this apparatus during lightning storms or
when unused for long periods of time.

14) Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord
or plug is damaged, liquid has been spilled or ob­jects have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does not op­erate normally, or has been dropped.

Reference Manual

Page 3

IQ–SLM-8 System and Load Monitoring IQ System Component

Quick Install Procedure

This procedure is provided for those who are already familiar with Crown’s

IQ System

possible. Less experienced installers or those wishing a full explanation of
the installation procedure are encouraged to go to Section 4 where the full
installation procedure is described.

Prepare the IQ–SLM-8:

1 Set the IQ address switch (Figures 4.1 and 4.2) on the

Mounting:

2 Mount the unit (Figure 4.3). It can be mounted into a standard 19-

Install the wiring:

3 Connect the

4 Turn off all amplifiers or other equipment that will either feed or be

5 Connect the

6 Connect the audio wiring to the

Prepare the audio system:

7 Set all equalizers, filters, delays and any other processing equip-

8 Set and verify all level and gain settings between the test signal

Configure the IQ–SLM-8:

9 Use IQ software to perform and verify reference tests with the

10 After determining the normal variations in the audio system, set the

and who would like to install the

IQ–SLM-8

in the shortest time

IQ–SLM-8

to

an unused IQ address.

inch (48.3-cm) equipment rack or cabinet, or it can be stacked.

IQ–SLM-8

Section 4.6 if more information is needed).

connected to the

IQ–SLM-8

stream of the monitor points (Figure 4.5).

to the

IQ System

via the Crown Bus (see

1

IQ–SLM-8.

signal generator to the audio system up-

1

IQ–SLM-8

inputs and outputs.

ment between the test signal insertion point and the monitor points.

insertion point and the monitor points.

IQ–

SLM-8

connected to an

IQ System.

Remember to allow for the natu­ral variations in your system and try to obtain reference
measurements that are typical.

tolerance levels which will determine when a test passes or fails.

Page 4

1

In order to comply with FCC regulations, an EMI suppression core should be added to
the (1) Crown Bus input and output wiring, (2) the generator output wiring, and (3) the
AUX input and output wiring. Three EMI suppression cores are provided. See Section

4.9.

Reference Manual

IQ–SLM-8 System and Load Monitoring IQ System Component

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 Technical
Support Group.

Crown Audio Division Technical Support Group

Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, Indiana 46517 U.S.A.

Phone: [phone] (North America, Puerto Rico and Virgin Islands) or 219-294-8200

Fax: [phone] Fax Back (North America only): 800-294-4094 or 219-293-9200

Fax Back (International): 219-294-8100 Internet: http://www.crownaudio.com email: [e-mail]

WARNING

TO REDUCE THE RISK OF ELECTRIC

SHOCK, DO NOT EXPOSE THIS

EQUIPMENT TO RAIN OR MOISTURE!

PLEASE NOTE

The following universal symbols may appear on your product and/or in various
sections of this manual. Wherever they appear, they are to be interpreted as follows:

Lightning Bolt Symbol:

This symbol is used to alert the user to the presence of dangerous
voltages and the possible risk of electric shock.

Exclamation Mark Symbol:

This symbol is used to alert the user to refer to the instruction
manual for important operating or maintenance instructions.

FCC Class A Compliance

This equipment has been tested and found to comply with the limits for Class A
Digital Device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Op­eration of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense.

The user is cautioned that any changes or modifications not expressly approved by
the party responsible for compliance could void the user’s authority to operate the
equipment.

Reference Manual

Note: For a system to comply with FCC rules, all components in the system must be
in compliance. Please consult the instruction manuals of all components in an IQ
System for FCC compliance.

Page 5

CONTENTS

IQ–SLM-8 System and Load Monitoring IQ System Component

Quick Install Procedure ..............................4

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

1.1 Unpacking ............................................7

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

3 Features.....................................................10

3.1 Signal Generator.................................10

3.2 Load/Output Monitoring ......................10

3.3 Fused Loudspeaker Monitor ...............11

3.4 Stand-alone Operation ........................11

3.5 Local Memory .....................................11

3.6 Synchronous Operation ......................11

3.7 Data Indicator .....................................11

3.8 Power Indicator...................................11

3.9 AUX Port .............................................11

3.10 “No-Fault” Warranty............................11

4 Installation.................................................12

4.1 Prepare the

4.2 Mounting.............................................12

4.3 In s tall th e Wiring..................................13

4.4 Prepare the Audio System...................14

4.5 Configure the

4.6 A Closer Look at Crown Bus Wiring.....14

4.7 Using an Audio Monitor.......................16

4.8 Using the AUX Connector ...................17

4.8.1 Triggering a Test

4.8.2 Signaling a Failed Test

4.8.3 Controlling External Devices

4.9 EMI Suppression.................................18

4.10 Synchronous Setup............................18

5 T echnical Information ...............................20

5.1 Load Monitor Data Acquisition ............20

5.2 Signal Generator.................................20

5.3 Loudspeaker Monitor ..........................20

5.4 Crown Bus I/O.....................................20

5.5 Microprocessor and Memory ..............20

5.6 Power Supplies ...................................20

SLM-8

(AUX Input) ..............................17

(AUX Output)............................17

(AUX Output)............................17

..............................12

SLM-8 ...........................

14

6 Specifications............................................21

7 IQ Address Tables .....................................22

8 Service.......................................................24

8.1 Worldwide Service ..............................24

8.2 North American Service ......................24

8.2.1 Factory Service .........................24

ILLUSTRATIONS

1.1 The

2.1 The Front Facilities ........................................8

2.2 The Rear Facilities.........................................9

4.1 IQ Addr ess Switch Location........................12

4.2 IQ Addr ess Switch Values ...........................12

4.3 Mounting Dimensions .................................12

4.4

4.5 Generator Wiring.........................................13

4.6 Audio Input/Output Wiring...........................13

4.7 A Screw-Terminal Plug ................................15

4.8 Cr own Bus Wiring for Removable

4.9 Cr own Bus Wiring for 5-pin DIN Input..........15

4.10 Crown Bus Wiring for RJ-45 Input................15

4.11 Crown Bus Wiring for 4-pin DIN Output .......16

4.12 Crown Bus Wiring for RJ-45 Output.............16

4.13 Crown Bus Wiring “Loops” from

4.14 Monitor Loudspeaker Wiring .......................16

4.15 The Internal AUX Circuit..............................17

4.16 A Sample AUX Output Circuit ......................17

5.1

7.1 IQ Addr ess Switch Settings

7.2 IQ Addr ess Switch Settings

IQ–SLM-8...............................................

SLM-8

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

Barrier Blocks .............................................15

Output to Input............................................16

SLM-8

Circuit Block Diagram ......................19

fro m 0 t o 125...............................................22

from 126 to 250...........................................23

7

Page 6

Reference Manual

IQ–SLM-8 System and Load Monitoring IQ System Component

POWERDATA

Fig. 1.1 The IQ–SLM-8

1 Welcome

The

IQ–SLM-8

eight-channel monitoring device with a built-in test sig­nal generator . It can monitor the impedance r esponse
of eight different loads (such as loudspeakers) and/or
the frequency response2 of eight line-level or high-level
outputs. When a load or output is tested, the unit will
compare the results to a reference measurement
stored inside its memory and display either a pass or
fail signal with its two-color indicators on the front
panel. The unit also sends pass/fail information to an

IQ System

of each channel is set individually.
The

IQ–SLM-8

rest of this manual) can serve as a valuable trouble­shooting tool to help you identify problems before they
become severe. For example, with an impedance test,
you may be able to locate a damaged loudspeaker
before it fails completely. In addition, the
serve as a powerful security tool to help you prevent
unauthorized changes to an audio system. For ex­ample, you can monitor the frequency response of an
output to verify that both level and equalization settings
have not been changed.

1

The term “impedance response” is used to refer to the impedance
magnitude of a load. It is calculated by measuring the current that flows
to the load and the voltage across the load verses frequency.

2

The term “frequency response” is used to refer to the amplitude
response or voltage magnitude of an output. It is calculated by measur­ing the voltage across an output verses frequency.

System and Load Monitor is a versatile

if one is connected. The pass/fail tolerance

(we’ll shorten the name to

SLM-8

SLM-8

for the

can

IMPEDANCE RESPONSE

FREQUENCY RESPONSE

The

SLM-8

PASS / FAIL INDICATORS

12345678

PASS: GREEN / FAIL: RED

is also an

IQ2

-compatible component. This

means it can be both monitored and controlled by a

1

Crown

IQ System

. However, with its front-panel pass/
fail indicators and its ability to initiate a test with an
external switch, it can also be used in a stand-alone
mode after it has been configured by an

IQ System

host computer running appropriate IQ software and an
IQ interface is required for setup).

This manual will help you successfully install your unit.
Please read all the instructions, warnings and cautions
contained within it. Also, for your protection, please
send in the warranty registration card today. And save
the bill of sale—it is your official proof of purchase.

1.1 Unpacking

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

Please save all packing materials. NEVER SHIP THE

UNIT WITHOUT THE FACTORY PACK.

(a

Reference Manual

Page 7

IQ–SLM-8 System and Load Monitoring IQ System Component

IMPEDANCE RESPONSE

FREQUENCY RESPONSE

Fig. 2.1 The Front Facilities

A

12345678

B

POWERDATA

PASS / FAIL INDICATORS

PASS: GREEN / FAIL: RED

C

2 Facilities

A. Data Indicator

The Data LED flashes yellow when the unit is actively
communicating (transmitting data) via the Crown Bus.
It may also be forced to stay on by IQ software.

B. Pass/Fail Indicators

Two rows of eight two-color LEDs light solid green/red
to indicate pass/fail status for each monitor channel
within the unit. LEDs in the upper row indicate imped­ance response test status; LEDs in lower row indicate
frequency response test status. Alternate red/green
flashing indicates that testing is in progress.

C. Power Indicator

The Power LED lights amber to indicate the presence
of AC mains power.

D. IQ Address Switch

An 8-section DIP switch is used to set the IQ address
of the unit. It must have a unique IQ address so it can
be independently controlled and monitored by the sys­tem. Two or more IQ components of the same type
should NEVER have the same address on the same

Crown Bus loop (See Section 4.1). Important: The IQ

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

E. Crown Bus Ground Connector

A chassis ground stud is provided to connect an op­tional shield for the Crown Bus cable. Only the shield of
the input cable should be connected. Shielded wire
may reduce the total distance a Crown Bus loop can
be run (because shielded wire usually has higher ca­pacitance), but shielding may be necessary to reduce
interference with certain types of audio cables. (See
Sections 4.3 and 4.6)

F. Crown Bus Input/Output Connector

A 4-pin male “Euro-style” connector which accepts a
screw terminal plug is used for input and output con­nection to the Crown Bus. The pins are numbered

from right to left (as you face the back panel of the
unit). Pin 1 is input negative (–), and pin 4 is output

positive (+). (See Sections 4.3 and 4.6)

Page 8

Reference Manual