Harman Kardon AVR435 Service Manual page 22

AVR435/635
• When a disc with Dolby Digital data, but only
2.0 audio is detected, the default mode is Dolby
Digital with Pro Logic II post-processing when you
have a 5.1 speaker system, or Dolby Digital with
Pro Logic IIx post-processing when you have
a 7.1 speaker system.
• Depending on the number of speaker channels
available in your system, once the AVR locks to
the digital signal, you may select any surround
mode or post-processing option that is available,
based on the incoming data stream's possible
restrictions and the number of speakers in your
system. For example, when a 5.1 or 2.0 audio
stream is in use, you may select alternate post-
processing such as Logic 7/7-Channel Movie
Mode post-processing to create the rear surrounds
in 7.1 speaker systems.
DTS
DTS is another digital audio system that is capable of
delivering 5.1 or 6.1 discrete or matrix sound field
reproduction. Although both DTS and Dolby Digital are
digital, they use different methods of encoding the sig-
nals, and thus they require different decoding circuits
to convert the digital signals back to analog.
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DTS-encoded soundtracks are available on select DVD
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and LD discs, as well as on special audio-only DTS
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discs. You may use any LD or CD player equipped
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with a digital output to play DTS-encoded discs with
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the AVR 435. All that is required is to connect the
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player's output to either an Optical or Coaxial Input
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or front panel KM.
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In order to listen to DVDs encoded with DTS sound-
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tracks, the DVD player must be compatible with the
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DTS signal, which is indicated by a DTS logo on the
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player's front panel. Early DVD players may not be
able to play DTS-encoded DVDs. This does not indi-
cate a problem with the AVR 435, as some players
cannot pass the DTS signal through to the digital out-
puts. If you are in doubt as to the capability of your
DVD player to handle DTS discs, consult the player's
owner's manual.
NOTE: Some DVD players have a default setting that
does not pass through the DTS signal. Before playing
DVDs with a DTS soundtrack, make certain that the
settings in your DVD player have been properly adjusted
so that DTS audio is passed through. Consult the
owner's manual for your DVD player for more informa-
tion on making these settings.
Selecting a Digital Source
To utilize either digital mode, you must have properly
connected a digital source to the AVR 435. Connect
the digital outputs from DVD players, HDTV receivers,
satellite systems or CD players to the Optical or
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Coaxial Inputs KM
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backup signal and a source for analog stereo recording, 21
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the analog outputs provided on digital source equipment
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should also be connected to their appropriate inputs on
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the AVR 435 rear panel (e.g., connect the analog stereo
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audio output from a DVD to the DVD Audio Inputs
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on the rear panel when you connect the source's
digital outputs).
If you have not already configured an input for a digital
source using the on-screen menus as shown on page
21, first select the input using the remote or front
panel controls, as outlined in this manual. Next,
select the digital source by pressing the Digital
Select Button pF and then using the
Navigation Button o on the remote or the
Button H on the front panel to choose any of the
OPTICAL or COAXIAL inputs, as they
appear in the Upper Display Line # or on-screen
display. When the digital source is playing, the
AVR 435 will automatically detect which type of digital
data stream is being decoded and display that infor-
mation in the Upper Display Line #.
When both a digital and an analog connection are
made between a source device and the AVR, the digi-
tal input is the default. If the digital stream is not pres-
ent or is interrupted, the unit will automatically switch
over to the analog inputs for the selected source.
If you wish to disable the auto-polling feature, you
may do so by following the instructions shown in the
Advanced Features section of this manual on page 40.
Digital Bitstream and Surround Mode Indications
When a digital source is playing, the AVR
the type of bitstream data that is present. Using this
information, the correct surround mode will automati-
cally be selected. For example, DTS bitstreams will
cause the unit to switch to DTS decoding, and Dolby
Digital bitstreams will enable Dolby Digital decoding.
When the unit senses PCM data from CDs or LDs, you
may select any of the standard Dolby or DTS surround
modes or Logic 7. Since the range of available sur-
round modes is dependent on the type of digital data
that is present, the AVR 435 shows you what type of
signal is present to help you understand the choice of
modes.
When a digital source is first detected, the AVR
will display a message to indicate the type of bitstream
being received. This message will appear shortly after
an input or surround mode is changed, and will remain
in the Lower Display Line $ for about five seconds
before that portion of the display returns to the normal
surround mode indication.
For Dolby Digital and DTS sources, a numerical indica-
tion (such as 3/2/2.1) will appear, showing the num-
ber of channels present in the data.
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The first number in the display message indicates how
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many discrete front-channel signals are present.
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• A "3" tells you that separate front left, center and
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front right signals are available. This will be displayed
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for Dolby Digital 5.1 and DTS 5.1 programs.
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• A "2" tells you that separate front left and right sig-
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nals are available, but there is no discrete center
channel signal. This will be displayed for Dolby
Digital bitstreams that have stereo program material.
• A "1" tells you that there is only a mono channel
available in the Dolby Digital bitstream.
The middle number in the display message indicates
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⁄ ¤
how many discrete surround channel signals are present.
‹ ›
/
• A "3" tells you that separate, discrete left surround,
center surround and right surround signals are pres-
ent. This is available only on discs with DTS-ES
digital audio.
• A "2" tells you that separate surround left and right
signals are available. This will be displayed for Dolby
Digital 5.1 and DTS 5.1 programs.
• A "1" tells you that there is only a single, surround-
encoded surround channel. This will appear for
Dolby Digital bitstreams that have matrix encoding.
• A "0" indicates that there is no surround channel
information. This will be displayed for two-channel
stereo programs.
The last number indicates whether there is a discrete
low-frequency effects (LFE) channel. This is the ".1" in
the common abbreviation of "5.1" sound and it is a
special channel that contains only bass frequencies.
435 senses
• A ".1" tells you that an LFE channel is present. This
will be displayed for Dolby Digital 5.1 and DTS 5.1
programs, as available.
• A "0" indicates that there is no LFE channel infor-
mation available. However, even when there is no
dedicated LFE channel, low-frequency sound will be
present at the subwoofer output when the speaker
configuration is set to show the presence of a
subwoofer.
• The information in the right side of the display will
tell you if the digital audio data contains a special
flag signal that will automatically activate the appro-
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priate 6.1 or 7.1 mode. This will be shown as
EX-ON or EX-OFF for Dolby Digital bitstreams and
ES-ON or ES-OFF for DTS bitstreams.
When a 2.0 or 5.1 digital source is playing on a sys-
tem configured for 5.1operation, you may use Dolby
Digital EX, DTS-ES, Logic 7/7 or Dolby Pro Logic IIx
to add rear channels for full 7.1 sound fields. Note,
however, that the availability of specific modes for
post-processing is dependant on the format of the
incoming source material. While some combinations
harman/kardon
OPERATION
OPERATION OPERATION 35 35