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Harman/Kardon AVR 151 [10/47] Introduction to home theater and place your speakers

AVR

Introduction to Home Theater and

Place Your Speakers

Introduction to Home Theater

This introductory section will help you to familiarize yourself with some basic concepts

unique to multichannel surround-sound receivers, which will make it easier for you to

set up and operate your AVR.

Typical Home Theater System

A home theater typically includes an audio/video receiver, which controls the system

and supplies ampliﬁcation for the loudspeakers; a disc player; a source component for

television broadcasts (cable box, satellite dish receiver, HDTV tuner or antenna connected

to the TV); a TV or video display; and multiple loudspeakers.

Multichannel Audio

The main beneﬁt of a home theater system is its ability to produce “surround sound.”

Surround sound uses multiple speakers and ampliﬁer channels to immerse you in the

audio/video presentation for a dramatically increased sense of realism.

Your AVR may have up to ﬁve main speakers connected directly to it, plus a subwoofer.

Each main speaker is powered by its own ampliﬁer channel inside the AVR. A system

with more than two speakers is called a multichannel system. The different main speaker

types in a home theater system are:

Front Left and Right: The front left and right speakers are used as in a two-channel

system. In many surround-sound modes, these speakers are secondary, while the main

action, especially dialogue, is reproduced by the center speaker.

Center: When you are watching movies and television programs, the center speaker

reproduces most of the dialogue and other soundtrack information, anchoring it with the

picture. When you are listening to a musical program, the center speaker helps to create

a seamless front soundstage, creating a realistic “you-are-there” listening experience.

Surround Left and Right: The surround left and right speakers produce ambient sounds

that help create a realistic and immersive surround-sound environment. They also help

recreate directional sound effects such as aircraft ﬂyovers.

Many people expect the surround speakers to play as loudly as the front speakers.

Although you will calibrate all of the speakers in your system to sound equally loud at the

listening position, most artists use the surround speakers for ambient effects only, and

they create their programs to steer relatively little sound to these speakers.

Subwoofer: A subwoofer is designed to play only the lowest frequencies (the deep

bass). It augments smaller, limited-range main speakers that are usually used for the

other channels. Many digital-format programs, such as movies recorded in Dolby Digital,

contain a low-frequency effects (LFE) channel that is directed to the subwoofer. The LFE

channel packs the punch of a rumbling train or airplane, or the power of an explosion,

adding realism and excitement to your home theater.

Surround Modes

There are different theories as to the best way to present surround sound and to

distribute each audio channel’s sounds to the surround-sound system’s speakers.

A variety of algorithms have been developed in an effort to recreate the way we hear

sounds in the real world, providing you with a rich variety of options. Several companies

have developed different surround-sound technologies, all of which can be accurately

reproduced by your AVR:

Dolby Laboratories:t Dolby TrueHD, Dolby Digital Plus, Dolby Digital, Dolby Digital

EX.

DTS:t DTS-HD High Resolution Audio, DTS-HD Master Audio, DTS, DTS-ES (Discrete

and Matrix), DTS Neo:6

, DTS 96/24

™

HARMAN International:t Logic 7

, HARMAN virtual speaker, HARMAN headphone.

Stereo Modes:t 2CH Stereo and 5CH Stereo.

Appendix Table A8, on page 36, contains detailed explanations of the different surround-

sound options available on your AVR. Digital surround-sound modes, such as the Dolby

Digital and DTS modes, are available only on specially encoded programs, such as those

available via HDTV, DVD and Blu-ray Disc media and digital cable or satellite television.

Other surround modes may be used with digital and analog signals to create a different

surround presentation or to use a different number of speakers. Surround-mode

selection depends upon the number of speakers in your system, the program you are

watching or listening to, and your personal tastes.

Place Your Speakers

Determine the locations for your system’s speakers according to their manufacturer’s

directions and the layout of your listening room. Use the illustrations below as a guide.

To create the most realistic surround-sound environment possible, you should place

your speakers in a circle with the listening position at its center. You should angle each

speaker so it directly faces the listening position. Use the diagram below as a guide.

SUB

Placing the Left, Center and Right Speakers

Place the center speaker either on top of, below or mounted on the wall above or below

the TV or video display screen. Place the front left and right speakers along the circle,

about 30 degrees from the center speaker and angled toward the listener.

Place the front left, front right and center speakers at the same height, preferably at

about the same height as the listener’s ears. The center speaker should be no more than

2 feet (0.6m) above or below the left/right speakers. If you’re using only two speakers

with your AVR, place them in the front left and right positions.

Placing the Surround Speakers

You should place the left and right surround speakers approximately 110 degrees from

the center speaker, slightly behind and angled toward the listener. Alternatively, place

them behind the listener, with each surround speaker facing the opposite-side front

speaker. You should place the surround speakers 2 feet – 6 feet (0.6m – 1.8m) higher

than the listener’s ears.

NOTE: Your receiver will sound its best when the same model or brand of loudspeaker

is used for all positions.

Placing the Subwoofer

Because a room’s shape and volume can have a dramatic effect on a subwoofer’s

performance, it is best to experiment with placement so that you will ﬁnd the location

that produces the best results in your particular listening room. With that in mind, these

rules will help you get started:

Placing the subwoofer next to a wall generally will increase the amount of bass in Ř

the room.

Placing the subwoofer in a corner generally will maximize the amount of bass in Ř

the room.

In many rooms, placing the subwoofer along the same plane as the left and right Ř

speakers can produce the best integration between the sound of the subwoofer and

that of the left and right speakers.

In some rooms, the best performance could even result from placing the subwoofer Ř

behind the listening position.

A good way to determine the best location for the subwoofer is by temporarily placing

it in the listening position and playing music with strong bass content. Move around

to various locations in the room while the system is playing (putting your ears where

the subwoofer would be placed), and listen until you ﬁnd the location where the bass

performance is best. Place the subwoofer in that location.

Harman/Kardon AVR 151 [10/47] Introduction to home theater and place your speakers

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