Audioaccess AVR21EN, Installation Instructions Manual

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The Dolby Digital, Dolby Digital EX, DTS 5.1, DTS-ES Matrix and DTS-ES Discrete modes may
only be selected when a digital input is in use. In addition, when a digital source is present, the
AVR21EN will automatically select and switch to the correct mode, regardless of the mode that
has been previously selected. For more information on selecting digital sources, see the Digital
Audio Playback section below.
When the 6-Channel/8-Channel direct inputs are in use, there is no surround processing, as
these inputs take the analog output signals from an optional, external DVD-Audio or SACD player,
or another source device, and carry them straight through to the volume control.
To listen to a program in traditional two-channel stereo, using the front left and front right
speakers only (plus the subwoofer, if installed and configured), from the remote, first press the
AVR Button [oval 5] then repeatedly press the Surround Button [oval 13] until
SURR. OFF
appears in the Surround Mode Indicators and 2 CH STEREO appears in the AVR Lower Display
Line [square 34] . From the front panel, press the Surround Mode Group Selector [square 4]
until the Stereo modes appear in the on-screen display and Lower Display Line [square 34] .
Next, press the Surround Mode Selector Button [square 5] until SURR. OFF appears in the
Surround Mode Indicators and 2 CH STEREO appears in the on-screen display and AVR Lower
Display Line [square 34].
Digital Audio Playback
Digital audio is a major advancement over analog surround processing systems. It delivers up to
six discrete channels, and each channel reproduces full frequency range (20Hz to 20kHz) and
offers dramatically improved dynamic range and significant improvements to signal to- noise
ratios. In addition, digital systems have the capability to deliver an additional channel that is
specifically devoted to low-frequency information. This is the “.1” channel referred to when you
see these systems described as “5.1,” “6.1” or “7.1.” The bass channel is separate from the other
channels, but since it is intentionally bandwidth-limited, sound designers have given it that unique
designation.
SURROUND MODE CHART
MODE FEATURES
Dolby Digital Available only with digital input sources encoded with Dolby Digital data. It provides up to five
separate main audio channels and a special dedicated low-frequency effects channel.
Dolby Digital EX Available when the receiver is configured for 7.1 channel operation, Dolby Digital EX is the
latest version of Dolby Digital. When used with movies or other programs that have special
encoding, Dolby Digital EX reproduces specially encoded soundtracks so that a full 6.1/7.1
soundfield is available. When the receiver is set for 7.1 operation and a Dolby Digital signal
is present, the EX mode is automatically selected. Even if specific EX encoding is not
available to provide the additional channel, the special algorithms will derive a 7.1 output.
DTS 5.1 When the speaker configuration is set for 5.1-channel operation, the DTS 5.1 mode is
available when DVD, audio-only music or laser discs encoded with DTS data are played.
DTS 5.1 provides up to five separate main audio channels and a special dedicated low-
frequency channel.
DTS-ES 6.1 Matrix
DTS-ES 6.1
Discrete When the speaker configuration is set for 6.1/7.1 operation, playback of a DTS-encoded
program source will automatically trigger the selection of one of the two
DTS-ES modes. Newer discs with special DTS-ES discrete encoding will be decoded to
provide six discrete, full-bandwidth channels plus a separate low-frequency
channel. All other DTS discs will be decoded using the DTS-ES Matrix mode, which creates
a 6.1-channel sound field from the original 5.1-channel soundtrack.
Dolby Pro Logic II
Movie
Music
Pro Logic
Dolby Pro Logic II decodes full-range, discrete, left, center right, right surround and left
surround channels from either matrix surround-encoded programs or conventional stereo
sources when an analog input is in use. The Dolby Pro Logic II Movie mode is optimized for
movie soundtracks, while the Pro Logic II Music mode should be used with musical
selections. The Pro Logic mode re-creates original Pro Logic processing for those who prefer
that presentation.
Dolby Pro Logic IIx
Music
Movie
Dolby Pro Logic IIx is the latest extension of Dolby Pro Logic II technology that creates a
discrete 6.1 and 7.1 sound field from matrix surround or two-channel stereo sources in
systems configured for surround back speakers. Both Movie and Music versions of Pro Logic
IIx are available. These modes may also be applied to a six-channel source connected to the
8-Channel Direct Inputs so that the sound field is enhanced by adding back surround channels.