Crown VRack 4x3500HD Manual

Crown Receiver VRack 4x3500HD

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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.

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.

Some models may be exported under the name Amcron®.

4x3500 Operation Manual

142483-1 - 5/11

Operation Manual

page 2

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 (including ampliﬁers) 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 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, tripod, 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.

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.

TO PREVENT ELECTRIC SHOCK, DO NOT REMOVE TOP OR BOTTOM

COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL.

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.

WATCH FOR THESE SYMBOLS:

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.

IMPORTANT

VRacks require Class 2 output wiring.

MAGNETIC FIELD

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

preampliﬁers or tape decks directly above or below the unit. Because this

ampliﬁer has a high power density, it has a strong magnetic ﬁeld which can

induce hum into unshielded devices that are located nearby. The ﬁeld is

strongest just above and below the unit.

If an equipment rack is used, we recommend locating the ampliﬁer(s) in

the bottom of the rack and the preampliﬁer or other sensitive equipment at

the top.

Important Safety Instructions

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 modiﬁcations 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 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. 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

reception, 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.

Operation Manual

page 4

Features....................................................................................................................................................................................5

Setup .......................................................................................................................................................................................12

I-Tech HD Ampliﬁer Speciﬁcations ...................................................................................................................................12

Front & Back Panel Features .............................................................................................................................................13

Input Panel .............................................................................................................................................................................15

Input Wiring Schematic.......................................................................................................................................................17

Input Wiring Modes..............................................................................................................................................................16

VDrive .....................................................................................................................................................................................21

HiQnet™ Software ................................................................................................................................................................36

System Diagrams .................................................................................................................................................................42

Crown Audio Factory Service Information ......................................................................................................................46

Product Registration ............................................................................................................................................................47

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