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Harman Kardon AVR354 Manual

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INTRODUCTION TO HOME THEATER
The AVR 354 may be the first multichannel surround sound receiver
you have owned. Although it has more connections and features than
2-channel receivers, many of the principles are similar and the new
concepts are easy to understand. This introductory section will help you
to familiarize yourself with the basic concepts, which will make setup
and operation smoother.
If you are already familiar with home theater, you may skip this section
and proceed to the Connections section on page 19.
Typical Home Theater System
A home theater typically includes an audio/video receiver, which con
trols
the system; a DVD player; a source component for television broad
casts,
which may be a cable box, a satellite dish receiver, an HDTV tuner or
simply an antenna connected to the TV; a video display (television);
and loudspeakers.
All of these components are connected using various types of cables
for audio and video signals.
Multichannel Audio
The main benefit of a home theater system is that several loudspeakers
are used in various locations around the room to produce “surround
sound.” Surround sound immerses you in the musical or film presentation
for increased realism.
The AVR 354 may have up to seven speakers connected directly to it
(plus a subwoofer). Each main speaker is powered by its own amplifier
channel inside the receiver. When more than two speakers are used,
it is called a multichannel system.
• Front Left and Right – The main speakers are used the same
way as in a 2-channel system. However, you may notice that in
many surround modes, these speakers are used more for ambient
sound while the main action, especially dialogue, is moved to the
center speaker.
• Center – The center speaker is usually placed above or below the
video screen, and is used mostly for dialogue in movies and television
programs. This placement allows the dialogue to originate near the
actors’ faces, for a more natural sound.
• Surround Left and Right – The surround speakers are used to
improve directionality of ambient sounds. In addition, by using more
loudspeakers in the system, more dynamic soundtracks may be
played without risk of overloading any one speaker.
• Surround Back Left and Right – Additional surround speakers may be
placed behind the listening position, improving the precision with which
ambient sounds may be placed and allowing for more realistic-sounding
pans. By using more speakers in the system, the same sound levels may
be attained with less burden placed on any individual speaker.
The surround back speakers may also be used with specialized
surround modes that are designed for use with 7.1-channel systems,
such as Dolby Digital EX, Dolby Digital Plus, Dolby TrueHD, DTS-ES
(Discrete and Matrix), DTS-HD High Resolution Audio, DTS-HD Master
Audio and Logic 7 (7.1 modes). However, the surround back speakers
are optional. In fact, the AVR 354 enables you to set up a 5.1-channel
system in your main listening area, and reassign the surround back
channels for use with a multizone system, in which you use the
surround back channels to power a pair of loudspeakers located in
another room.
Many people expect the surround speakers to play as loudly as the
front speakers. Although all of the speakers in the system will be
calibrated to sound equally loud at the listening position, most artists
use the surround speakers for ambient effects only, and they program
their materials to steer very little sound to these speakers.
• Subwoofer – A subwoofer is a special-purpose speaker designed
to play only the lowest frequencies (the bass). It may be used to
augment smaller, limited-range satellite speakers used for the other
channels. In addition, many digital-format programs, such as movies
recorded in Dolby Digital and other digital formats, may contain a
special low-frequency effects (LFE) channel which is directed only
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. Many people use two subwoofers,
placed on the left and right sides of the room, for additional power
and even distribution of the sound.
Surround Modes
There are different theories as to the best way to present surround
sound and to distribute soundtrack information among the various
speakers. A variety of algorithms have been developed in an effort to
accurately reproduce the way we hear sounds in the real world. The
result is a rich variety of surround mode options. Some modes are
selected automatically, depending on the signal being received from
the source. In many cases, you may select a surround mode manually.
Several companies have taken surround sound in slightly differing
directions. It is helpful to group the numerous surround modes:
• Dolby Laboratories Modes – Dolby TrueHD, Dolby Digital Plus,
Dolby Digital, Dolby Digital EX, Dolby Pro Logic II and IIx, Dolby Virtual
Speaker, Dolby Headphone
• DTS Modes – DTS-HD, DTS-HD Master Audio, DTS, DTS-ES
(Discrete and Matrix), DTS Neo:6, DTS 96/24
• Harman International (the Harman Kardon parent company)
Modes – Logic 7
• Stereo Modes – Generic modes that expand upon conventional
2-channel stereo, including 5- and 7-Channel Stereo
Table A12 in the appendix contains detailed explanations of the
differences between the various mode groups, and the mode options
available within each group. Digital modes, such as Dolby Digital and
DTS, are only available with specially encoded programs, such as HDTV,
DVDs and digital cable or satellite television. Other modes may be used
with various 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
materials you are watching or listening to, and your personal tastes.
Feel free to experiment.
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