Pioneer SC-LX901 Basic Manual page 111

> Specifications > Settings > Listening Modes > Playback Function
■ No sound from a connected player
• Change the input selector on this unit to the position of
the terminal to which the player is connected.
• Check the digital audio output setting on the connected
component. On some game consoles, such as those
that support DVD, the default setting is off.
• With some DVD-Video discs, you need to select an
audio output format from a menu.
■ A speaker produces no sound
• Make sure that the polarity of the speaker cables (＋/−)
is correct, and that no bare wires are in contact with the
metal part of speaker terminals.
• Make sure that the speaker cables are not shorting.
• Check in "Connect the Speakers" in the Basic Manual
that the speaker connections have been made correctly.
Settings for the speaker connection environment need
to be made in "Full Auto MCACC" in Initial Setup. Check
in "Initial Setup" in the Basic Manual.
• Depending on the source and current listening mode,
not much sound may be produced by the surround
speakers. Select another listening mode to see if sound
is output.
• If you are installing surround back speakers, surround
speakers are required.
• With bi-amp connections, except for a case where only
the front speakers are bi-amp connected, when multiple
speakers are combined in a bi-amp connection, the
maximum number of channels that can be played back
is 5.1 ch. Further, make sure you remove the jumper
bar on the speakers when using Bi-Amping connection.
■ The subwoofer produces no sound
• When you play source material that contains no
information in the LFE channel, the subwoofer produces
no sound.
• When "System Setup" - " Speaker" - "Crossover" -
"Front" in the Home Menu is set to "Large" and during
2ch input such as from the TV or music, the low range
elements will be output from the front speakers rather
than from the subwoofer. If you would rather output from
the subwoofer, make one of the following settings.
– Change "Front" setting to "Small":
The low range elements will be output from the
subwoofer rather than the front speakers. We do not
recommend changing this if your front speakers have
good low range reproduction capabilities.
– Change "Double Bass" setting to "On":
The low range elements will be output from both the
front speakers and the subwoofer. This may mean
that there is too much bass. We recommend that you
do not change the setting or change "Front" setting
to "Small" if this happens.
■ Noise can be heard
• Using cable ties to bundle audio cables with power
cords, speaker cables, etc. may degrade the audio
performance, so refrain from doing it.
• An audio cable may be picking up interference. Try
repositioning your cables.
■ The beginning of audio received by an HDMI IN
cannot be heard
• Since it takes longer to identify the format of an HDMI
signal than it does for other digital audio signals, audio
output may not start immediately.
■ Sound is interrupted
• When "Upsampling" in "AV Adjust" is used to raise the
sampling frequency, there may be some interruption to
the sound depending on the connected device. Change
the setting to "x2". If sound is still interrupted, change it
to "x1".
Listening Modes
• To enjoy digital surround playback, such as Dolby
Digital, the audio signals need to pass through a
connection via HDMI cable, digital coaxial cable, or
digital optical cable. Audio output should be set to
bitstream output on the connected Blu-ray Disc player
or other device.
• Press on the remote controller several times to
switch the display of the main unit to check the input
format.
Check the following if the above does not fix the problem:
> Basic Manual
Troubleshooting
■ Cannot select a desired listening mode
• Depending on the connecting status of the speaker,
some listening modes may not be selected. Check in
"Selectable Listening Modes" in "Listening Modes" in
the Advanced Manual.
■ There is no sound with Dolby TrueHD, Dolby Atmos,
and DTS-HD Master Audio
• You need to connect surround back speakers or height
speakers to enjoy Dolby Atmos. Furthermore, Dolby
Atmos can only be enjoyed when the input signals are
Dolby Atmos.
• If you cannot output formats such as Dolby TrueHD,
Dolby Atmos, or DTS-HD Master Audio according to the
format of the source, in the Blu-ray Disc player settings
try setting "BD video supplementary sound" (or re-
encode, secondary sound, video additional audio, etc.)
to "Off". Change the listening mode for each source
after changing the setting to confirm.
■ About DTS signals
• With media that switches suddenly from DTS to PCM,
PCM playback may not start immediately. In such
cases, you should stop your player for about 3 seconds
and then resume playback.
• With some CD and LD players, you will not be able
to playback DTS material properly even though your
player is connected to a digital input on the unit. This is
usually because the DTS bitstream has been processed
(e.g., output level, sampling rate, or frequency response
changed) and the unit does not recognize it as a
genuine DTS signal. In such cases, you may hear
noise.
• Playing DTS program material, using the pause, fast
forward, or fast reverse function on your player may
produce a short audible noise. This is not a malfunction.
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