User's Manual

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INSTALLATION AND CONNECTIONS

em, contact your dealer or installer, or the manufac-

urer’s support site and ask whether the unit to be

controlled uses “full carrier” IR commands. When “full

carrier” commands are used, make the connection to

the

Full Carrier IR Output ¤. Otherwise, make the

onnection to the

R Output

‹.

NOTE: All remotely controlled components must be

linked together in a “daisy chain.” Connect the

IR OUT

jack of one unit to the IR IN of the next to establish

this chain.

Multiroom Audio Connections

The AVR 645 is equipped with multizone capabilities

that allow it to send a separate audio source to the

remote zone from the one selected for use in the

main room.

Depending on your system’s requirements, three

options are available for audio connection:

Option 1: Use high-quality, shielded audio intercon-

nect cable from the AVR 645’s location to the remote

room. In the remote room, connect the interconnect

cable to a stereo power amplifier. The amplifier will be

connected to the room’s speakers. At the AVR 645,

plug the audio interconnect cables into the

Multiroom

Audio Outputs

U on the AVR 645’s rear panel.

Option 2: Connect the Multiroom Audio Outputs

U on the AVR 645 to the inputs of an optional stereo

power amplifier. Run high-quality speaker wire from

the amplifier to the speakers in the remote room.

Option 3: Taking advantage of the AVR 645’s built-in

seven-channel amplifier, it is possible to use two of the

amplifier channels to power speakers in the remote

room. When using this option, you will not be able to

use the full 7.1-channel capabilities of the AVR 645 in

the main listening room, but you will be able to add

another listening room without external power ampli-

fiers. To use the internal amplifiers to power a remote

zone,

connect the speakers for the remote room loca-

tion to the

Surround Back/Multiroom Speaker

Outputs

ﬁ. Before using the remote room, you will

need to configure the amplifiers for surround operation

by changing a setting in the

MULTIROOM

menu,

following the instructions shown on page 51.

NOTE: F

or all options, you may connect an optional

IR sensor in the remote room to the AVR 645 via an

appropriate cable

Connect the sensor’s cable to the

Multiroom

Input

e on the

VR 645 and use

the ZR 10 remote to control the room volume. You may

install an optional volume control between the output of

the amplifiers and the speakers in options 1 and 2.

A-BUS

Installa

tion

Connections

The AVR 645 is among the few receivers available

that offer built-in A-BUS/

READY operation. When used

with an optional

A-BUS product, you have all the ben-

efits of remote zone operation without the need for an

exter

nal power amplifier

o use the AVR 645 with an approved A-BUS prod-

ct, simply connect it to the AVR 645 using standard

Category 5 wiring that is properly rated for the specific

in-wall installation. Terminate the wiring at the receiver

end to a standard RJ-45 connector in compliance

ith the instructions furnished with the A-BUS product.

No further installation or adjustment is needed, as the

A-BUS jack on the AVR 645 routes the signals to their

proper destination for power, signal source and control.

The output fed to the A-BUS jack is determined by the

AVR 645’s multiroom system and menus.

RS-232 Connections

The AVR 645 is equipped with an RS-232 Serial

Connection Port

a that may be connected to a

compatible, optional, external computer, keypad or

control system for bidirectional communications that

enable the external system to control the AVR, and for

the AVR to report status and handshake data back to

the controller. Use of the RS-232 port for this type of

control requires specific technical knowledge, and we

recommend that any connection and programming for

control be made by a trained installer or technician

familiar with the equipment being used.

The physical connection to the AVR 645’s RS-232

port is a standard D-SUB 9 connection, but to ensure

compatible and proper operation, specific software

commands and pin wiring schemes may be required.

USB Connections

The AVR 645 is one of the few A/V receivers to offer

a USB connection that may be used for both playback

of compatible audio content from a computer and for

loading of system updates (when available).

The physical connection between a computer and the

VR is a simple one, requiring only a cable with a USB

“A” type connector on one side and a USB “Mini B” on

the other. If you do not need the USB cable provided

with the AVR 645 for programming the TC 30 remote,

it may be used for this purpose.

Connect the larger, “A” connector on the cable to your

computer or a USB hub and the end with the “Mini”

USB connector to the

USB Jack W on the AVR’s

rear panel.

NOTES ON USB:

• The USB jack on the AVR 645 is for connection to

a computer, or to a hub connected to a computer,

only. DO NOT connect it directly to other devices

such as card readers, USB memory storage

devices, external hard drives, USB accessories, digi-

tal cameras or cellular phones. Connection to these

devices may cause damage to the device and/or

the AVR that is not covered by the AVR’s warranty.

• The AVR 645’s USB connection may only be used

for audio playback and system upgrades. It may not

be used for other purposes

such as system control,

video or still-image playback.

rigger Connections

The AVR 645 is equipped with a low-voltage triggers

that may be used to control a wide variety of compati-

le, optional devices that respond to voltage actuation

commands. This includes external audio power ampli-

fiers, video screens, motorized blinds

and other compatible products in a home theater or

automation system.

Due to the complexity of inter-

facing with power-controlled devices, we strong-

ly recommend that they be installed by a quali-

fied professional.

The trigger jack delivers 5 volts DC when activated,

and remove the voltage when they are off. The con-

nection is a 3.5mm mono mini plug with the signal on

the center pin (“tip”) and the outer shaft (“ring”) acting

as the negative or ground connection.

The

Trigger Output H is for use with devices such

as power amplifiers that you wish to activate with

whenever the AVR is turned on, regardless of

the input selected.

After checking for voltage, current and polarity com-

patibility between the device being controlled and the

AVR, simply connect one end of the trigger cable to

the device being controlled and the other end to the

desired Trigger Output on the AVR.

IMPORTANT NOTE ON THE TRIGGER CONNEC-

TION:

The current draw from the Trigger Jack cannot

exceed 1.0mA.

XM Radio Connections

XM Radio is a satellite-delivered, subscription-based,

programming service that provides a wide range of

music, sports, news and information programming with

digital audio quality. The AVR 645 is XM Connect &

Play-ready, which means that you can easily add the

XM service to your home audio system by purchasing

an XM antenna module or Passport system, activating

an account with XM and then making a simple, single-

cable connection to your AVR.

To purchase an XM antenna module or Passport

system, consult your dealer, or contact XM Radio at

www.xmradio.com. After following the instructions

packed with the module, place the XM antenna near

a south-facing window and run the cable to the AVR.

Connect the plug at the end of the cable to the

Module Input

V. If you are using an XM Passport

system, remember that the Passport card must be

inserted for the system to operate. Once the connec-

tion is made, follow the instructions on page 46 for

more information on listening to XM Radio.

NOTES on XM Radio:

• XM Radio requires the purchase of additional,

optional hardware and a separate subscription to

the XM ser

vice

• XM Radio is available only in the Continental United

States and Canada.

It is not available in

Alaska

INSTALLATION AND CONNECTIONS 19