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THX Surround EX
This mode can be used to process Dolby Digital Surround EX
(1)
encoded discs. THX Surround EX is a joint development of Dolby
Laboratories and the THX division of Lucasfilm Ltd. Movie
soundtracks that have been encoded with Dolby Digital Surround EX
technology are able to reproduce an extra channel which has been
added during the mixing of the program. This channel, called
Surround Back, places sounds behind the listener in addition to the
front left, front centre, front right, surround right, surround left and
subwoofer channels. This additional channel provides the
opportunity for more detailed imaging behind the listener and
brings more depth, spacious ambience and sound localisation than
ever before.
When released to the home consumer market, movies that were
created using the Dolby Digital Surround EX technology, may (but
some don’t!) have a note to that effect on the packaging. A list
of movies created using this technology can be found on the
Dolby web site at www.dolby.com.
You can also activate the
THX SURROUND EX
mode during the
playback of standard 5.1 channel material (i.e. movies not
including a Dolby Digital Surround EX encoded back channel).
In such a case the information delivered to the Surround Back
channel will be program dependent and may or may not be
pleasing depending on the particular soundtrack and the tastes
of the individual listener.
If your AV32R ‘Dual Processor’ does not include all 7.1 channels
then you will not be able to extract the back channel information.
You will not miss any sound but the spatial distribution of the
surround sound will not provide the same depth and spacious
ambience (as the sound, intended for the back channel is equally
replayed through the left and right surround loudspeakers).
To apply THX SURROUND EX, press the
THX
key on the remote or
the
THX Cinema
button on the front panel, once or repeatedly until
you selected your desired mode. If the current surround mode for the
selected input does not support THX, the AV32R ‘Dual Processor’
will select the appropriate surround mode. Press either the THX key
or button again to turn off THX Cinema post-processing.
1. THX SURROUND EX is only available if your AV32R ‘Dual Processor’ is equipped with 7.1 channels and system setup includes back
speaker(s).
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