Manual Rotel RSX-1056 (page 26 of 46) (English)

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RSX-1056 Surround Sound Receiver

DTS Neo:6

The RSX-1056 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. Activate the DTS Neo:6 de-

coding 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 cen-

ter back surround channel, intended to increase

the directional effects from behind the audi-

ence. This additional surround channel is en-

coded into the two existing surround channels

in Dolby Digital 5.1, using a matrix encod-

ing process similar to that used previously in

Dolby Surround. This new extended surround

capability is called Dolby Digital Surround EX.

DTS has added a similar capability for record-

ing this extended surround information called

DTS-ES

6.1 Matrix. They have also taken it

one step further and developed the capabil-

ity to record this extended surround informa-

tion 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 in-

formation. On traditional 5.1 channel systems,

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 stan-

dard DTS soundtracks. Likewise, decoding of

Dolby Digital Surround EX discs is automatic

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 manu-

ally activate Dolby Surround EX processing.

Dolby Pro Logic IIx

6.1 and 7.1 Channel Surround

The latest technology from Dolby uses advanced

matrix decoding for the surround channels in

a 6.1 channel or 7.1 channel system. Work-

ing with any 2.0 channel or 5.1 channel re-

cording, Dolby Pro Logic IIx processing dis-

tributes the surround channel information

among three or four surround channels, with

a Music mode optimized for musical record-

ings and a Cinema mode optimized for film

soundtracks.

Rotel XS

6.1 and 7.1 Channel Surround

The RSX-1056 also features Rotel XS (eXtra

Surround) processing provides extended sur-

round performance on 6.1 and 7.1 channel

systems. The key benefit of Rotel XS is that it

works at all times with all multichannel digi-

tal signals, even those that might not otherwise

activate Dolby Digital EX or DTS-ES surround

decoding for the center back channel(s). Al-

ways available when center back speaker(s)

are configured in the system setup, Rotel XS

decodes the surround channels 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 Surround EX encoded (such as DTS 5.1,

Dolby Digital 5.1, and even Dolby Pro Logic

II decoded Dolby Digital 2.0 recordings).

DSP Music Modes

Unlike all of the formats mentioned above, the

RSX-1056 offers four surround modes that are

not part of a specific recording/playback sys-

tem. These modes (MUSIC 1–4) use digital sig-

nal processing that adds special acoustic ef-

fects to any signal. DSP processing can be used

with Dolby Surround recordings, Dolby Digi-

tal recordings, CDs, radio broadcasts, or any

other source material; however, typically DSP

settings would be used with source material

for which there is no specific surround decoder.

The four MUSIC MODES in the RSX-1056 use

digital delay and reverberation effects to simu-

late progressively larger acoustic environments

with MUSIC 1 being the smallest 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-1056 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 deliv-

ers a conventional 2-channel signal to the front

speakers. If the system is configured to route

bass signals from the front speakers to the

subwoofer, this capability remains in effect.

Analog Bypass: For 2-channel analog in-

puts, there is a special stereo mode that by-

passes ALL of the RSX-1056’s digital process-

ing. The two front speakers receive pure analog

stereo full-range signals with no subwoofer

crossover, no delay, no level adjustments, 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 speakers.

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.

Other Digital Formats

Several other digital formats are not surround

sound formats at all, but rather systems for digital

2-channel recordings.

PCM 2-channel: This is an uncompressed

2-channel digital signal such as that used for

standard CD recordings and some DVD re-

cordings, particularly of older films.

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