User's Manual

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INSTALLATION AND CONNECTIONS

System Installation

fter unpacking the unit, locating it in a place with ade-

quate ventilation and placing it on a solid surface capable

of supporting its weight, you will need to make the con-

nections to your audio and video equipment.

MPORTANT NOTE:

or your personal safety and to

avoid possible damage to your equipment and speakers,

it is always good practice to turn off and unplug the AVR

and ALL source equipment from the AC output before

aking any audio or video system connections.

Audio Equipment Connections

We recommend that you use high-quality interconnect

cables when making connections to source equipment

and recorders to preserve the integrity of the signals.

1. Connect the analog output of a CD player to the

CD Audio Inputs 6.

NOTE: If your CD player has both fixed and variable

audio outputs, it is best to use the fixed output unless

you find that the input to the receiver is so low that the

sound is noisy

, or so high that it is distorted.

2. Connect the analog Play/Out jacks of a cassette

deck, MD, CD-R or other audio recorder to the

Tape Inputs 4. Connect the analog Record/In

jacks on the recorder to the

Tape Outputs 2

on the AVR 645.

3. Connect the output of a digital source such as

a CD or DVD changer or player, a video game, a

digital satellite receiver, an HDTV tuner or digital

cable set-top box or the output of a compatible

computer sound card to the

Optical and Coaxial

Digital Audio Inputs

abKM.

4. Connect the coaxial or optical

Digital Audio Outputs

XY on the rear panel of the AVR 645 to the match-

ing digital input connections on a CD-R, MiniDisc or

other digital recorder.

5. Assemble the

AM loop antenna supplied with the unit

so that the tabs at the bottom of the antenna loop

snap into the holes in the base. Connect it to the

Antenna Connections

i .

6. Connect the supplied FM antenna to the

Antenna Jack

h. The FM antenna may be

an exter

nal roof antenna, an inside powered or

wire-lead antenna or a connection from a cable

TV system.

If the antenna or connection uses

300-ohm twin-lead cable

you must use an optional

300-ohm-to-75-ohm adapter to make the

connection.

. Connect the front, center, surround and surround

ack speaker outputs

7DE

o the respec-

tive speakers.

To ensure that all the audio signals are carried to your

peakers without loss of clarity or resolution, we sug-

gest that you use high-quality speaker cable. Many

brands of cable are available and the choice of cable

may be influenced by the distance between your

speakers and the receiver, the type of speakers you

use, personal preferences and other factors. Your

dealer or installer is a valuable resource to consult in

selecting the proper cable.

Regardless of the brand of cable selected, we recom-

mend that you use cable

with a gauge of 14 or smaller.

Remember that when specifying cable, the lower the

number

, the thicker the cable.

Cable with a gauge of 16 may be used for short runs

of less than 10 feet. We do not recommend that you

use cables with an AWG equivalent of 18 or higher,

due to the power loss and degradation in performance

that will occur.

Cables that are run inside walls should have the appro-

priate markings to indicate listing with UL, CSA or other

appropriate testing agency standards. Questions about

running cables inside walls should be referred to your

installer or a licensed electrician who is familiar with

the NEC and/or the applicable building codes in

your area.

When connecting wires to the speakers, be certain

to observe proper polarity. Note that the positive (+)

terminal of each speaker connection has a specific color

code, as noted on page 8. However, most speakers

still use a red terminal for the positive (+) connection.

Connect the “negative” or “black” wire to the same

terminal on both the receiver and the speaker.

NOTE: While most speaker manufacturers adhere to

an industry convention of using black ter

minals for

negative and red ones for positive, some may vary

from this configuration. To ensure proper phase and

optimal performance, consult the identification label on

your speaker or the speaker

’

s manual to verify polarity

If you do not know the polarity of your speaker

, ask

your dealer for advice before proceeding, or consult

the speaker’s manufacturer.

e also recommend that the length of cable used

to connect speaker pairs be identical.

or example

use the same length piece of cable to connect the

front-left and front-right or surround-left and sur-

round-right speakers

even if the speakers are a

different distance from the AVR 645.

8. Connections to a single subwoofer are normally

made via a line-level audio connection from the

Subwoofer

Output

1 to the line-level input of a

subwoofer with a built-in amplifier. When a passive

subwoofer

is used,

the connection first goes to a

ower amplifier, which will be connected to one or

ore subwoofer speakers. If you are using a pow-

ered subwoofer that does not have line-level input

connections, follow the instructions furnished with

the speaker for connection information.

9. If an external audio source such as a DVD-Audio,

SACD or high definition optical disc player with 5.1

or 7.1 analog audio outputs is part of your system,

connect the outputs of the source to the 8-Channel

Direct Inputs c.

Analog Video Equipment Connections

Analog video components are connected in the same

manner as audio components. Again, the use of high-

quality interconnect cables is recommended to preserve

signal quality.

1. Connect the Video Play/Out jacks of a standard

(composite) video or

S-Video outputs of a digital

video recorder or conventional VCR to the

Video 1

Video Inputs

R on the AVR. Connect the

Record/In jacks from that device to the

Video 1

Video Outputs

S on the AVR.

2. Connect analog Audio Left/Right Play/Out jacks of

the device connected to the Video 1 Inputs to the

Video 1 Audio Inputs d on the AVR. Connect

the analog Audio Left/Right Record/In jacks from

that device to the

Video 1 Audio Outputs g on

the AVR. If the device has a digital audio output,

connect it to one of the

Coaxial a or Optical b

digital audio inputs.

3. Connect the Play/Out jacks of a standard (compos-

ite) video or S-Video outputs of a video playback

source such as a set-top box or video game con-

sole to the

Video 2 Video Inputs T or Video 3

Video Inputs

U. If the device has analog compo-

nent video (Y/Pr/Pb) outputs, connect them to one

of the

Component Video Inputs O.

Connect the analog audio outputs from the source

to the matching

Video 2 Audio Inputs e or

Video 3

Audio Inputs

If the device has a digi

tal audio output,

connect it to one of the

Coaxial

a or Optical b digital audio inputs

If the any of the video source devices has analog

component video (Y/Pr/Pb) outputs, but not HDMI,

connect them to

Component

Video Inputs

The chart on page 55 has the default settings for

various source devices

, but you may make any

connection and change the configuration setting

using the

IN/OUT SETUP menu,

described on page 22.

The default video connection for a

DVD

player is to

use the

Component Video Input 3 Jacks O on

the

VR,

but you may change this assignment in

the

IN/OUT

SETUP

(see page 22).

DVD player’s composite and S-video outputs may

also be connected to the

DVD Video Inputs Q.

Only one connection type is required,

although a

INSTALLATION

AND CONNECTIONS

INSTALLATION AND CONNECTIONS 17