English – Denon AVR-2802 User Manual

Page 36

ENGLISH

1 Please use a commercially available adapter when connecting the Dolby Digital RF (AC-3RF) output jack

of the LD player to the digital input jack.
Please refer to the instruction manual of the adapter when making connection.

2 Some DVD digital outputs have the function of switching the Dolby Digital signal output method

between “bit stream” and “(convert to) PCM”. When playing in Dolby Digital surround on the AVR-
2802, switch the DVD player’s output mode to “bit stream”. In some cases players are equipped with
both “bit stream + PCM” and “PCM only” digital outputs. In this case connect the “bit stream + PCM”
jacks to the AVR-2802.

Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories.
Confidential unpublished works, ©1992-1999 Dolby Laboratories. All rights reserved.

(2) Dolby Pro Logic

• Dolby Pro-Logic

is a new multi-channel playback format developed by Dolby Laboratories using

feedback logic steering technology and offering improvements over conventional Dolby Pro Logic circuits.

• Dolby Pro Logic

can be used to decode not only sources recorded in Dolby Surround (

) but also

regular stereo sources into five channels (front left, front right, center, surround left and surround right) to
achieve surround sound.

• Whereas with conventional Dolby Pro Logic the surround channel playback frequency band was limited,

Dolby Pro Logic

offers a wider band range (20 Hz to 20 kHz or greater). In addition, the surround

channels were monaural (the surround left and right channels were the same) with previous Dolby Pro
Logic, but Dolby Pro Logic

they are played as stereo signals.

• Various parameters can be set according to the type of source and the contents, so it is possible to

achieve optimum decoding (see page 24).

Sources recorded in Dolby Surround
These are sources in which three or more channels of surround have been recorded as two channels of
signals using Dolby Surround encoding technology.
Dolby Surround is used for the sound tracks of movies recorded on DVDs, LDs and video cassettes to
be played on stereo VCRs, as well as for the stereo broadcast signals of FM radio, TV, satellite broadcasts
and cable TV.
Decoding these signals with Dolby Pro Logic makes it possible to achieve multi-channel surround
playback. The signals can also be played on ordinary stereo equipment, in which case they provide
normal stereo sound.

There are two types of DVD Dolby surround recording signals.
q 2-channel PCM stereo signals
w 2-channel Dolby Digital signals

When either of these signals is input to the AVR-2802, the surround mode is automatically set to Dolby
Pro Logic

when the “DOLBY/DTS SURROUND” mode is selected.

Sources recorded in Dolby Surround are indicated with the logo mark shown below.
Dolby Surround support mark:

Media

LD (VDP)

DVD

Dolby Digital output jacks

Optical or coaxial digital output

(same as for PCM)

Optical or coaxial digital output

(same as for PCM)

Optical or coaxial digital output

(same as for PCM)

Playback method (reference page)

Set the input mode to “AUTO” or “DTS” (page 20). Never set
the mode to “ANALOG” or “PCM”.

Set the input mode to “AUTO” or “DTS” (page 20).

DTS Digital Surround

Digital Theater Surround (also called simply DTS) is a multi-channel digital signal format developed by Digital
Theater Systems.
DTS offers the same “5.1” playback channels as Dolby Digital (front left, front right and center, surround left and
surround right) as well as the stereo 2-channel mode. The signals for the different channels are fully independent,
eliminating the risk of deterioration of sound quality due to interference between signals, crosstalk, etc.
DTS features a relatively higher bit rate as compared to Dolby Digital (1234 kbps for CDs and LDs, 1536 kbps for
DVDs) so it operates with a relatively low compression rate. Because of this the amount of data is great, and
when DTS playback is used in movie theaters, a separate CD-ROM synchronized with the film is played.
With LDs and DVDs, there is of course no need for an extra disc; the pictures and sound can be recorded
simultaneously on the same disc, so the discs can be handled in the same way as discs with other formats.
There are also music CDs recorded in DTS. These CDs include 5.1-channel surround signals (compared to two
channels on current CDs). They do not include picture data, but they offer surround playback on CD players that
are equipped with digital outputs (PCM type digital output required).
DTS surround track playback offers the same intricate, grand sound as in a movie theater, right in your own
listening room.

DTS compatible media and playback methods

Marks indicating DTS compatibility:

and

The following are general examples. Also refer to the player’s operating instructions.

1 DTS signals are recorded in the same way on CDs and LDs as PCM signals. Because of this, the un-

decoded DTS signals are output as random “hissy” noise from the CD or LD player’s analog outputs. If
this noise is played with the amplifier set at a very high volume, it may possibly cause damage to the
speakers. To avoid this, be sure to switch the input mode to “AUTO” or “DTS” before playing CDs or LDs
recorded in DTS. Also, never switch the input mode to “ANALOG” or “PCM” during playback. The same
holds true when playing CDs or LDs on a DVD player or LD/DVD compatible player. For DVDs, the DTS
signals are recorded in a special way so this problem does not occur.

2 The signals provided at the digital outputs of a CD or LD player may undergo some sort of internal signal

processing (output level adjustment, sampling frequency conversion, etc.). In this case the DTS-encoded
signals may be processed erroneously, in which case they cannot be decoded by the AVR-2802, or may
only produce noise. Before playing DTS signals for the first time, turn down the master volume to a low
level, start playing the DTS disc, then check whether the DTS indicator on the AVR-2802 (see page 26)
lights before turning up the master volume.

3 A DVD player with DTS-compatible digital output is required to play DTS DVDs. A DTS Digital Output logo

is featured on the front panel of compatible DVD players. Recent DENON DVD player models feature DTS-
compatible digital output – consult the player’s owner’s manual for information on configuring the digital
output for DTS playback of DTS-encoded DVDs.

Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942, 5,956,674, 5,974,380,
5,978,762 and other world-wide patents issued and pending.
“DTS”,”DTS-ES Extended Surround” and “Neo:6” are trademarks of Digital Theater Systems, Inc. ©1996,
2000 Digital Theater Systems, Inc. All Rights Reserved.