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Operation Manual

Product Registration: Register your new product at http://warranty.harmanpro.com.

Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your

local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000 or

www.crownaudio.com.

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.

The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have

occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.

Trademark Notice: Crown, Crown Audio, IQ, BCA, and Amcron are registered trademarks of Crown International. HiQnet is a

trademark of Harman International Industries, Inc. Other trademarks are the property of their respective owners.

I-Tech 4x3500HD DriveCore™ Series

5059136

4/15

Some models may be exported under the name Amcron.

Operation Manual

I-Tech HD DriveCore Series Power Ampliers

page 2

The I-Tech Series ampliers are certied only

at 120V in Canada.

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

reg isters, stoves, or other apparatus (including ampliers)

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 grounding-type 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 t into your outlet, consult an electrician for

replacement of the obsolete outlet.

Important Safety Instructions

MAGNETIC FIELD

CAUTION! Do not locate sensitive high-gain equipment such as pre-

ampliers directly above or below the unit. Because this amplier has a

high power density, it has a strong magnetic eld which can induce hum

into unshielded devices that are located nearby. The eld is strongest

just above and below the unit.

If an equipment rack is used, we recommend locating the ampliers)

in the bottom of the rack and the preamplier or other sensitive equip -

ment at the top.

The lightning bolt triangle is used to alert the user to the risk of

electric shock.

The exclamation point triangle is used to alert the user to

important operating or maintenance instructions.

REGARDEZ CES SYMBOLES:

La triangle avec le sigle ‘’foudre’’ est employée pour alerter

l’utilisateur au risque de décharge électrique. Le triangle avec

un point d’exclamation est employée pour alerter l’utilisateur

d’instruction importantes pour lors opérations de mainte nance.

ATENCION CON ESTOS SÍMBOLOS:

El triángulo con el símbolo de rayo eléctrico es usado para

alertar al usuario de el riesgo de un choque eléctrico.

El triángulo con el signo de admiración es usado para alertar

al usuario de instrucciones importantes de operación o man-

tenimiento.

WATCH FOR THESE SYMBOLS:

IMPORTANT

I-Tech Series ampliers require Class 2 output wiring.

Les amplicateurs de série de I-Tech exigent des câbles de sortie de

classe 2.

I-Tech-Reihe-Verstärker verlangen Klasse die 2 Produktionsverdrah-

tung.

Los amplicadores de la Serie I-Tech requieren de un cableado de

sal ida Clase 2.

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR

BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES

COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE À

L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR

PERSONNEL QUALIFIÉ SEULMENT.

PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS

CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES

QUE PUEDAN SER REPARADAS POR EL USUARIO AL INTE-

RIOR. REMITA EL SERVICICO AL PERSONAL TÉCHNICAL

CALIFICADO.

TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE

AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG

FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER

SUPPLY CORD SHALL REMAIN READILY OPERABLE.

POUR DÉMONTER COMPLÈTEMENT L’ÉQUIPEMENT DE

L’ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE D’ALI-

MENTATION DE SON RÉCEPTACLE. LA PRISE D’ALIMEN TATION

RESTERA AISÉMENT FONCTIONNELLE.

PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL

SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALI-

MENTACION DE LA TOMA DE CA. LAS PATAS DEL CONEC TOR

DEL CABLE DE ALIMENTACIÓN DEBERAN MANTENERSE EN

BUEN ESTADO.

FCC COMPLIANCE NOTICE

This device complies with part 15 of the FCC rules. Operation is subject to the following

two conditions: (1) This device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation.

CAUTION: Changes or modications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B

digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This equip -

ment 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 com -

munications. However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful interference to radio or television recep -

tion, which can be determined by turning the equipment off and on, the user is encouraged

to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

10. Protect the power cord from being walked on or pinched,

par ticularly at plugs, convenience receptacles, and the point

where they exit from the apparatus.

11. Only use attachments/accessories specied by the manufac-

turer.

12. Use only with a cart, stand, tripod, bracket, or table specied

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 qualied 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 nor mally, or has been dropped.

15. Use the mains plug to disconnect the apparatus from the

mains.

16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC

SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR

MOISTURE.

17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR

SPLASHING AND ENSURE THAT NO OBJECTS FILLED

WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON THE

EQUIPMENT.

18. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL

REMAIN READILY OPERABLE.

Importantes Instructions de Sécurité

Wichtige Sicherheitsinstruktionen

Instrucciones de Seguridad Importantes

Operation Manual

I-Tech HD DriveCore Series Power Ampliers

page 4

Table of Contents

Important Safety Instructions ............................................................ 2

Declaration of Conformity ..................................................................3

Table of Contents ..............................................................................4

1 Welcome ........................................................5

1.1 Features .................................................................................5

1.2 How to Use This Manual ......................................................... 5

2 Setup .............................................................6

2.1 Unpack and Install Your Amplier .......................................... 6

2.2 Connecting to AC Mains ........................................................7

2.3 Wire Inputs and Outputs ......................................................... 7

3 HARMAN GreenEdge - Going ‘Green’ ........................11

3.1 Going ‘Green’ ..........................................................................11

3.2 The Sound of Efciency .......................................................... 11

3.3 Green Savings ........................................................................11

4 Integraded DriveCore

TM Technology ..........................12

5 Powered by Crown ..............................................13

6 Operation ........................................................14

6.1 Protecting Your Speakers 14 .......................................................

6.2 Startup Procedure .................................................................. 14

6.3 Precautions ............................................................................14

6.4 Front Panel Controls and Indicators ........................................15

6.5 Back Panel Controls, Indicators and Connectors .....................16

7 Advanced Operation ............................................17

7.1 Introduction ............................................................................ 17

7.2 Operation Example .................................................................. 18

7.3 Presets ................................................................................... 27

7.4 List of Pop-Up and Descriptions ............................................. 28

7.5 Digital Audio Options (AES3 and VDrive) ................................ 29

7.6 Networking the Amplier ......................................................... 29

7.7 Software- Controllable Onboard DSI ....................................... 29

8 Troubleshooting ................................................44

9 Specications ...................................................46

10 AC Power Draw and Thermal Dissipation ..................50

11 Advanced Features ............................................51

11.1 Protection Systems ............................................................... 51

11.2 Global Switching Power Supply with PFC ............................. 51

11.3 6th Generation Class I Circuitry ............................................ 51

11.4 Color-Coded Rear Overlay .................................................... 51

12 Appendix A: Network and CobraNet Basics ................52

12.1 HiQnet Networks ................................................................... 52

12.2 A Closer Look at CobraNet .................................................... 52

13 LevelMAXTM Limiter Suite ....................................56

14 LevelMAX Limiters ............................................57

14.1 LevelMAX Peak Limiter ......................................................... 57

14.2 Peak Limiter Threshold (Vpk) ................................................ 57

14.3 Peak Limiter Attach (sec)....................................................... 57

14.4 Peak Limiter Release (sec) .................................................... 57

14.5 Peak Limiter Look Ahead....................................................... 57

14.6 Level MAX RMS Limiter ........................................................ 57

14.7 RMS Threshold (VRMS) ....................................................... 57

14.8 LevelMAX Tranducer Thermal Limiters ................................. 57

14.9 Thermal Voltage (VRMS) ...................................................... 57

14.10 Thermal Response Time (s)................................................. 57

15 Appendix B: Table of Parameters Modied by Each Mode

with LevelMAX ....................................................58

16 Application of FIR Filters to Loudspeakers Crossovers ..60

16.1 FIR Overview ......................................................................... 60

16.2 What are IIR Filters and FIR Filters? ....................................... 60

16.3 Pros and Cons of IIR and FIR Filters ...................................... 60

16.4 Desirable Attributes of FIR Filters .......................................... 60

16.5 High Rolloff and Steep Slopes ............................................... 61

16.6 Stop-band Attenuation .......................................................... 61

16.7 FIR Polar Lobing Eror............................................................ 61

16.8 Crown’s Implementation of FIR Filters ................................... 61

16.9 FFT Convolution ................................................................... 61

16.10 Filter Design ....................................................................... 61

16.11 Low Latency 96 kHz Studio Quality Filters ........................... 62

16.12 Measurements of Two-way Loudspeaker System ................ 62

16.13 FIR Measurements .............................................................. 64

16.14 Conclusions ....................................................................... 65

17 Service ..........................................................66

17.1 International and Canada Service .......................................... 66

17.2 US Service ............................................................................ 66

18 Warranty ........................................................67

Produktspecifikationer

Varumärke:	Crown
Kategori:	mottagare
Modell:	I-Tech 4x3500HD

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