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•See also Listening to your system on page 29 for
information on different ways of listening to sources.
It is possible to check on the display whether or not multi-
channel playback is being performed properly.
When using a surround back speaker, 2D+PL IIx
MOVIE is displayed when playing Dolby Digital signals,
and DTS+Neo:6 is displayed when playing DTS 5.1-
channel signals.
When not using a surround back speaker, DOLBY
DIGITAL is displayed when playing Dolby Digital signals.
4 Use the volume control to adjust the volume level.
Turn down the volume of your TV so that all sound is
coming from the speakers connected to this receiver.
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 (see
illustration below).
During multichannel playback, LFE (Low-Frequency
Effects) signals as well as low-frequency signals in each
channel are assigned to the subwoofer or other the
subwoofer and the most appropriate speaker. At least in
theory, however, this type of processing involves a group
delay that varies with frequency, resulting in phase
distortion where the low-frequency sound is delayed or
muffled by the conflict with other channels. With the
Phase Control mode switched on, this receiver can
reproduce powerful bass sound without deteriorating the
quality of the original sound (see illustration below).
Phase Control OFF
• Rhythms blurred and difficult to hear
• Bass sound with loss of depth
• Sound of musical instruments with no reality
Phase Control ON
• Rhythms with crystal-like clarity
• Bass sound with no loss of depth
• Sound of musical instruments with superb reality
Phase Control technology provides coherent sound
reproduction through the use of phase matching
1
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.
•Press
RECEIVER
, then press
PHASE
(
PHASE
CONTROL
) to switch on phase correction.
The PHASE CONTROL indicator on the front panel lights.
Front speaker
Subwoofer
Sound
source
Sound muffled due
to a delay in time
Listening
position
Note
1 • 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 (as shown in the upper section of the diagram
above), then the sound will be ‘out of phase’ and an unreliable sound image will be produced.
• The PHASE CONTROL feature is available even when the headphones are plugged in.
• 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 HDMI audio output parameter is set to THROUGH in Setting the Audio options on page 69.
Front speaker
Subwoofer
Sound
source
Original sound
preserved with no
loss of clarity
Listening
position
THX STATUS PHASE
TV CTRL
DTV/TV
AUDIO
DISPLAY
EON MPX
SIGNAL SEL
CH
RECEIVER
PHASE
RECEIVER
VSX-LX51_HY.book 11 ページ ２００８年４月１６日 水曜日 午後４時３９分