Better Sound Using Phase Control; Using Surround Back Channel Processing; Setting The Up Mix Function - Pioneer VSX-921-k Manual De Instrucciones

05 Listening to your system
05

Better sound using Phase Control

This receiver's Phase Control feature uses phase correction
measures to make sure your sound source arrives at the
listening position in phase, preventing unwanted distortion
and/or coloring of the sound.
Phase Control technology provides coherent sound
reproduction through the use of phase matching for an
optimal sound image at your listening position. The default
setting is on and we recommend leaving Phase Control
switched on for all sound sources.
TV
RECEIVER
SLEEP SOURCE CONTROL
RECEIVER
INPUT SELECT
INPUT
 Press
RECEIVER , then press PHASE to switch the P.CTL
(Phase Control) ON or OFF.
Note
• Phase matching is a very important factor in achieving
proper sound reproduction. If two waveforms are 'in
phase', they crest and trough together, resulting in
increased amplitude, clarity and presence of the sound
signal. If a crest of a wave meets a trough, then the sound
will be 'out of phase' and an unreliable sound image will
be produced.
• If your subwoofer has a phase control switch, set it to the
plus (+) sign (or 0°). However, the effect you can actually
feel when Phase Control is set to ON on this receiver
depends on the type of your subwoofer. Set your
subwoofer to maximize the effect. It is also recommended
you try changing the orientation or the place of your
subwoofer.
• Set the built-in lowpass filter switch of your subwoofer to
OFF. If this cannot be done on your subwoofer, set the
cutoff frequency to a higher value.
• If the speaker distance is not properly set, you may not
have a maximized Phase Control effect.
• The Phase Control mode cannot be set to ON in the
following cases:
When the PURE DIRECT mode is switched on.
-
- When the headphones are connected.
34
En

Using surround back channel processing

You can have the receiver automatically use 6.1 or 7.1
decoding for 6.1 encoded sources (for example, Dolby Digital
EX or DTS-ES), or you can choose to always use 6.1 or 7.1
decoding (for example, with 5.1 encoded material). With 5.1
encoded sources, a surround back channel will be
generated, but the material may sound better in the 5.1
format for which it was originally encoded (in which case, you
can simply switch surround back channel processing off).
• With a 7.1-channel surround system, audio signals that
have undergone matrix decoding processing through
surround back channel processing to which the Up Mix
HDD DVD VCR
1 2 3
DISP
function is added are output from the surround back
S.RETRIEVER SB CH CH SELECT EQ
speakers.
4 5 6
CH
PHASE
MIDNIGHT SPEAKERS LEV
7 8 9 CH
S
RECEIVER
RECEIVER
 Press
RECEIVER
the surround back channel options.
Each press cycles through the options as follows:
• SB ON – Matrix decoding processing for generating the
surround back component from the surround component
is turned on.
• SB AUTO – Matrix decoding processing for generating
the surround back component from the surround
component is switched automatically. Matrix decoding
processing is only performed when surround back
channel signals are detected in the input signals.
• SB OFF – Matrix decoding processing for generating the
surround back component from the surround component
is turned off.
HDD DVD VCR
1 2 3
TV
SLEEP SOURCE CONTROL
S.RETRIEVER SB CH CH SELECT
4 5 6
INPUT SELECT MIDNIGHT SPEAKERS LEV PHASE
INPUT 7 8 9
, then press SB CH repeatedly to cycle

Setting the Up Mix function

In a 7.1-channel surround system with surround speakers
placed directly at the sides of the listening position, the
surround sound of 5.1-channel sources is heard from the
side. The Up Mix function mixes the sound of the surround
speakers with the surround back speakers so that the
surround sound is heard from diagonally to the rear as it
should be.
• Using the Up Mix function is effective when the speakers
in the 7.1-channel surround system are set up as
recommended in the example on page 10.
• Depending on the positions of the speakers and the
sound source, in some cases it may not be possible to
achieve good results. In this case, set the setting to OFF.
UP MIX OFF
DISP
SW C
L R
EQ
CH
CH
S
SL SR
SBL SBR
1
Switch the receiver into standby.
While holding down PRESET  on the front panel, and
2
hold the  STANDBY/ON for about two seconds.
UP MIX: OFF appears and the Up Mix function turns off. If
you want to turn this function on, perform steps 1 and 2
again.
• When set to ON, the
panel lights.
Note
• Set to ON regardless of this setting when playing DTS-HD
signals.
• May automatically be set to OFF even when set to ON,
depending on the input signal and listening mode.
UP MIX ON
SW C
L R
SL SR
SBL SBR
(Up Mix) indicator on the front