Dts Neo:6; Dolby Digital Surround Ex; Dts-Es6.1 And 7.1 Channel Surround; Dolby Pro Logic Iix - Rotel RSX-1057 Owner's Manual

RSX-1057 Surround Sound Receiver

DTS Neo:6

The RSX-1057 features a second type of
DTS surround sound decoding: DTS Neo:6.
This decoding system is similar to Dolby Pro
Logic II and is designed for playback of any
2-channel stereo recording, either matrix-
encoded or not. The Neo:6 decoder can
be used with any conventional 2-channel
source such a stereo TV or FM broadcast or
a CD. It can also be used as an alternative
method of decoding matrix-encoded Dolby
Surround recordings or TV broadcasts. Ac-
tivate the DTS Neo:6 decoding with the DTS
Neo:6 button as detailed later in this section.
DTS Neo:6 is not used with DTS 5.1 digital
sources and the button need not be pressed
for those recordings.

Dolby Digital Surround EX

DTS-ES

6.1 and 7.1 Channel Surround

In 1999, the first Dolby Digital soundtrack
was released to theaters with an additional
center back surround channel, intended to
increase the directional effects from behind
the audience. This additional surround chan-
nel is encoded into the two existing surround
channels in Dolby Digital 5.1, using a matrix
encoding process similar to that used previ-
ously in Dolby Surround. This new extended
surround capability is called Dolby Digital
Surround EX.
DTS has added a similar capability for re-
cording this extended surround information
called DTS-ES 6.1 Matrix. They have also
®
taken it one step further and developed the
capability to record this extended surround
information as a discrete channel in a system
called DTS-ES 6.1 Discrete.
®
All of these systems are extensions of the ex-
isting Dolby Digital 5.1 and DTS 5.1 digital
surround sound formats. Users with one cen-
ter back speaker (a 6.1 configuration) or two
center back speakers (a 7.1 configuration)
can take advantage of this extended surround
information. On traditional 5.1 channel sys-
tems, Dolby Digital Surround EX or DTS-ES 6.1
discs sound exactly the same as 5.1 channel
discs in each respective format.
If you have configured your system with one
or two center back speakers, decoding of
DTS-ES discs is automatic, just as it is with
standard DTS soundtracks. Likewise, decod-
ing of Dolby Digital Surround EX discs is au-
tomatic with one exception. Some Surround
EX titles do not have the detection "flag"
encoded on the disc. To activate the Dolby
Digital Surround EX features for these discs
(or for standard 5.1 channel Dolby Digital
discs), you must manually activate Dolby Sur-
round EX processing.

Dolby Pro Logic IIx

6.1 and 7.1 Channel Surround
The latest technology from Dolby uses ad-
vanced matrix decoding for the surround
channels in a 6.1 channel or 7.1 channel
system. Working with any 2.0 channel or
5.1 channel recording, Dolby Pro Logic IIx
processing distributes the surround channel
information among three or four surround
channels, with a Music mode optimized for
musical recordings and a Cinema mode op-
timized for film soundtracks.

Rotel XS

6.1 and 7.1 Channel Surround
The RSX-1057 also features Rotel XS (eXtend-
ed Surround) processing provides extended
surround performance on 6.1 and 7.1 chan-
nel systems. The key benefit of Rotel XS is
that it works at all times with all multichan-
nel digital signals, even those that might not
otherwise activate Dolby Digital EX or DTS-
ES surround decoding for the center back
channel(s). Always available when center
back speaker(s) are configured in the system
setup, Rotel XS decodes the surround chan-
nels and distributes the extended surround
channels to the center back speaker(s) in a
way that tends to create a diffuse surround
effect. Rotel XS works with matrix-encoded
surround signals (such as non-flagged DTS-
ES and Dolby Surround EX discs) as well as
digital source material that is not Dolby Sur-
round EX encoded (such as DTS 5.1, Dolby
Digital 5.1, and even Dolby Pro Logic II de-
coded Dolby Digital 2.0 recordings).
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DSP Music Modes

Unlike all of the formats mentioned above,
the RSX-1057 offers four surround modes that
are not part of a specific recording/playback
system. These modes (MUSIC 1–4) use digital
signal processing that adds special acoustic
effects to any signal. DSP processing can be
used with Dolby Surround recordings, Dolby
Digital recordings, CDs, radio broadcasts,
or any other source material; however, typi-
cally DSP settings would be used with source
material for which there is no specific sur-
round decoder.
The four MUSIC MODES in the RSX-1057
use digital delay and reverberation effects
to simulate progressively larger acoustic en-
vironments with MUSIC 1 being the small-
est type of venue (such as a jazz club) and
MUSIC 4 being a large venue (such as a
stadium). Typically used to add ambience
and a sense of space when listening to music
sources or other sources that lack surround
sound encoding.

2Ch/5Ch/7Ch Stereo Formats

The RSX-1057 also provides four modes that
disable all surround processing and deliver
stereo signals to amplifiers and speakers.
There are three options:
2CH Stereo: Turns off the center channel
and all surround channels in the system and
delivers a conventional 2-channel signal
to the front speakers. If the system is con-
figured to route bass signals from the front
speakers to the subwoofer, this capability
remains in effect.
Analog Bypass: For 2-channel analog
inputs, there is a special stereo mode that
bypasses ALL of the RSX-1057's digital pro-
cessing. The two front speakers receive pure
analog stereo full-range signals with no sub-
woofer crossover, no delay, no level adjust-
ments, and no contour adjustment.
5CH Stereo: Distributes a stereo signal to
5.1 channel systems. The left channel signal
is sent, unchanged, to the front left and sur-
round left speakers. The right channel is sent
to the front right and surround right speak-
ers. A mono sum of the two channels is sent
to the center channel speaker.
7CH Stereo: This mode is the same as
5CH Stereo described above except that it
also distributes stereo signals to center back
speaker(s) installed in the system.