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Common Functions
—Continued
If you connect a component to more than one audio
input, such as a DVD player connected to analog, digital,
multichannel, and HDMI inputs, you can use the [Audio
Sel] button to select which audio input you want to use
to listen to that component.
Normally, the AV receiver detects the format of digital
input signals automatically. However, if you experience
either of the following issues when playing PCM or DTS
sources, you can specify the signal format manually.
• If the beginnings of tracks from a PCM source are cut
off, try the PCM setting.
• If noise is produced when fast forwarding or rewind-
ing a DTS CD, try the DTS setting.
Selecting Audio Inputs
Press the [Audio Sel] button
repeatedly to select an audio
input: HDMI > Auto > Multich >
Analog.
HDMI:
Selects the assigned HDMI
IN, and the HDMI indicator
appears on the display. (The
HDMI IN must already be
assigned to the current input
selector. See page 50.)
Auto:
Selects the assigned COAX-
IAL or OPTICAL DIGITAL
IN, and the DIGITAL indica-
tor appears on the display.
(The DIGITAL IN must
already be assigned to the
current input selector. See
page 52.) If there is no digital
signal, the analog input is
used instead.
Multich:
Selects the multichannel
input, and the ANALOG indi-
cator appears on the display.
(The multichannel input must
already be assigned to the
current input selector. See
page 53.)
Analog:
Selects the analog input, and
the ANALOG indicator
appears on the display.
You can also use the [Audio Selector]
button on the AV receiver.
RC-688M
Audio
Repeat
Play Mode
Open/Close
Listening Mode
DVD HDD
Playlist
RandomRec
Test Tone
CH Sel
Direct
Stereo
Level
+
Level
-
L Night
Audio Sel
THX All ST
Re-EQ
Subtitle
Video Off
VCR
Surround
Audio Sel
Audio Sel
Specifying the Digital Signal Format
1
Press the [Audio Selector] button
repeatedly to select Auto.
2
While “Auto” is shown on the dis-
play, use the Tone Plus [+] and
Minus [–] buttons to select:
PCM:
Only input signals in PCM
format are output, and the
PCM indicator lights up. The
indicator flashes if the input
signal is not PCM.
DTS:
Only input signals in DTS
format are output, and the
DTS indicator lights up. The
indicator flashes if the input
signal is not DTS.
Auto (default):
The format is detected
automatically. If no digital
input signal is present, the
analog input is used instead.
1
2