Pioneer VSX-C502-S - Manuel (Page 49)

Additional information
49
En
English
11
Note
• If the unit does not operate normally due to external
effects such as static electricity, disconnect the
power plug from the outlet and insert again to return
to normal operating conditions.
Surround sound formats
Below is a brief description of the main surround sound
formats you’ll find on DVDs, satellite, cable and
terrestrial broadcasts, and video cassettes.
Dolby Digital
You can identify Dolby Digital encoded source by the
following logo:
1
Dolby Digital is a multichannel digital audio coding
system widely used for DVD and digital broadcast
soundtracks. It can deliver up to six discrete audio
channels, comprising five full range channels and a
special LFE (low frequency effects) channel used mainly
for deep, rumbling sound effects; hence the term “5.1-
channel” Dolby Digital.
Dolby Digital Surround EX
Dolby Digital Surround EX (the EX stands for EXtended)
is an extension of Dolby Digital encoding whereby a
surround back channel is matrixed into the surround left/
right channels for 6.1 channel playback.
Dolby Pro Logic IIx and Dolby Surround
Dolby Pro Logic IIx is an improved version of the Dolby
Pro Logic II (and Dolby Pro Logic) decoding system. Using
the innovative “steering logic” circuit, this system
extracts surround sound from sources as follows:
• Dolby Pro Logic – 4.1 channel sound (mono
surround) from any stereo source
• Dolby Pro Logic II – 5.1 channel sound (stereo
surround) from any stereo source
• Dolby Pro Logic IIx – 6.1 or 7.1 channel sound
(stereo surround and surround back) from two
channel or 5.1(and 6.1) channel sources
With two channel sources, the “.1” subwoofer channel is
generated by bass management in the receiver.
Dolby Surround is an encoding system which embeds
surround sound information within a stereo soundtrack,
which a Dolby Pro Logic decoder can then use for
enhanced surround listening with greater sound detail.
When playing a disc, the
2 Pro Logic II or Neo:6
indicator lights on the receiver. • The input signal type is set to analog. Set the receiver to AUTO or DIG (page 34).
• A 2 channel soundtrack is currently playing. • This is not a malfunction. Check the disc packaging for
details of the audio formats available on the disc.
• The soundtrack currently playing is
encoded using Dolby Surround. • This is not a malfunction. Check the disc packaging for
details of the audio formats available on the disc.
The software is Surround EX /
DTS ES and the listening mode is
set to
AUTO but there is no EX /
ES decoding.
• There is no surround back channel on the
disc (some discs do not feature the exact
same channels as heard in movie theaters). • You can still listen with surround back sound by setting
the surround back channel to
SB ON (page 29).
During playback of a Dolby
Surround EX / DTS ES
soundtrack, the
Ls, S and Rs
indicators light but there is no
surround back channel sound.
• The listening mode is not set correctly. • Set the listening mode to AUTO (page 27) and set the
surround back channel to SB ON (page 29).
The MCACC automatic surround
setup continually shows an error. • The ambient noise level in the room is too
high. • Keep the noise level in the room as low as possible
when using the MCACC setup. If the noise cannot be kept
low enough, you will have to set up the surround sound
manually (page 36).
After using MCACC, the
subwoofer distance setting is set
further than the actual measured
distance. • The low-pass filter found in subwoofers can
introduce a very small delay in the playback
sound. • MCACC has compensated for the delay caused by the
filter.
After using MCACC, the speaker
size setting (
L or S) is incorrect.
• There was some inaudible low-frequency
noise in the room. • The low-frequency noise could have been caused by an
air conditioner or motor. Switch off all appliances in the
room and rerun the MCACC setup.
Everything seems to be set up
correctly, but the playback sound
is odd. • The speakers are out of phase. • Check that the positive/negative speaker terminals on
the receiver are matched with the corresponding
terminals on the speakers (page 15).
Symptom Cause Remedy
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