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Enjoying Surround Sound
6.1CH DECODING
Press 6.1CH DECODING to adjust the
6.1 channel matrix parameter in the SET UP
menu (page 45).
This function works only for the multi channel
format [3/2].
This function is effective for the following
sound fields.
• A.F.D.*
• NORMAL SURROUND
• CINEMA STUDIO EX A–C
• SEMI CINEMA STUDIO EX A–C
• NIGHT THEATER
• MONO MOVIE
• STEREO MOVIE
• V. MULTI DIMENSION
• VIRTUAL MULTI REAR
• V. SEMI M. DIMENSION
• VIRTUAL ENHANCED A, B
* You can select “AUTO” only.
About the “VIRTUAL MATRIX 6.1”
playback
(For STR-DB1070) You can reproduce the 6.1
channel surround sound of the sources encoded
in 6.1 channel (see below) in the 5.1 channel
speaker settings.
(For STR-DB870) Though this receiver
incorporates the 5.1 channel amplifier, you can
reproduce the 6.1 channel surround sound of
the sources encoded in 6.1 channel (see below).
To enjoy the “VIRTUAL MATRIX 6.1”
playback most effectively, use the 6.1CH
DECODING function when you select
“CINEMA STUDIO EX A–C” or “SEMI
CINEMA STUDIO EX A–C”. The sound
characteristics of CINEMA STUDIO and the
3D sound imaging create the virtual surround
back speaker, and you can enjoy the surround
effect as if in the real theater. You can select
AUTO/ON/OFF using the 6.1CH DECODING
button (page 45).
About 6.1 channel matrix decoding
Some movies released after summer 1999 added a
new channel to the preexisting 5.1 channels. The new
channel added speakers behind the listening position.
In the movie theaters, these speakers are placed on the
rear wall, on each side of the projection room’s
window.
The 6.1 channel system used in the movie theaters is
called Dolby Surround EX system. However, to
record on movie film, this 6.1 channel is converted to
5.1 channel using matrix encoding, and the same
number of channels are used as Dolby Digital and
DTS recordings. Recordings on DVD also use the
same signals.
A lot of movie theaters screen movies with matrix
encoded 5.1 channel signals and this is not unnatural
to the ears. However, when a matrix decoder is used
to create surround back speaker signals it simulates
the same 6.1 channel sound as Dolby Surround EX
system in the movie theaters.
This unit is equipped with a matrix decoder allowing
for 6.1 channel sound production.
For STR-DB870, with Virtual 3D technology, the
surround back signals can be enjoyed even without an
actual surround back speaker. When the center
speaker is not used, it is possible to use this channel
to output surround back signals.
NIGHT MODE
Allows you to retain a theater like environment,
at low volume levels even late at night. Even at
a low volume level, you can clearly hear the
dialogues and adjust the volume in small steps.
This function can be used with other sound
field (pages 28–30).
While this function is on, BASS, TREBLE, and
EFFECT level rises, and D.RANGE COMP. is
automatically set to “MAX”.
This function does not work while MULTI/
2CH A. DIRECT is on.
Note
No sound is output from the sub woofer when
“2CH” is selected. To listen to 2 channel (stereo)
sources using the front left and right speakers and a
sub woofer, select “A.F.D.”.