Operation
To listen to a program in traditional two-rear panel. In order to provide a backupTo engage the Night mode, press the
channel stereo, with only the front leftsignal and a source for recording, theNightbutton öfand note thatthe
and right speakers plus the subwoofer, ifanalog outputs provided on digital sourceindicator will illuminate above the
installed, press the Stereobutton xequipment should also be connected toNight button on the front panel.
on the remote or the Surround Offtheir appropriate rear panel inputs
button i on the front panel.(e.g., connect the analog stereo audioIMPORTANT NOTES ON
output from a DVD to the DVD inputs �DOLBY DIGITAL PLAYBACK:
Dolby Digital
on the rear panel when you connect the
Dolby Digital (also known as AC-3) is thedigital outputs).1. The AVR55 will decode digital audio
sources with a sampling frequency of
latest advancement in surround sound
technology, delivering up to five full-Dolby Digital sources must be used in32kHz, 44.1kHz and 48kHz. Although
range surround channels (left, center,conjunction with one of the video relatedthis will enable it to decode virtually all
inputs: DVD, TV, Vid 1 or Vid 2. First selectDVD movies and HDTV sources, it is pos-
right, left surround and right surround)one of these sources so that the videosible that some digital sources may not
plus a special dedicated Low-Frequency
Effects (LFE) channel. This represents aappears at the unitOs output before choos-be compatible with the AVR55.
major advancement over traditionaling digital audio. Next, press the Digital
Input button o hthat corresponds 2. The AVR55 will automatically detect
analog surround in that each surroundto the type of digital input used. An LEDmost Dolby Digital sources. It is possible,
channel is fully discrete and capable of
full bandwidth reproduction. Dolbywill light above the data type selected,however, that future source equipment
and a message will scroll across thethat could not be anticipated at this time,
Digital is available on DVD and LV discs,Information DisplayFto confirmmay require manual surround mode
and it will be a part of the new high-
definition television (HDTV) systemyour choice.selection or analog playback.
when digital broadcasting begins in
Finally, press the AC-3/Dolby Digital3. Note that not all programs recorded in
1998. Dolby Digital for the home is basedbutton zó to select Dolby Digital.Dolby Digital contain full 5.1 channel
on the same system used to deliver digital
audio soundtracks in movie theaters,The mode name will briefly scroll audio. Consult the program guide that
enabling true cinema reproduction inin the Information DisplayF, accompanies the DVD or Laser Disc to
and the Dolby Digital indicator Bdetermine which type of audio has been
your home.will illuminate.recorded on the disc. The AVR55 will
To utilize the Dolby Digital mode youautomatically sense the type of digital
Night Modesurround encoding used on an AC-3
must have a digital source properlyprogram source and adjust to
connected to the AVR55. The RF digitalA special feature of Dolby Digital is theaccommodate it.
output of a laser disc player should be
connected to the AC-3 RFjack g on theNight mode, which enables AC-3 input
sources to be played back with their full4. When a Dolby Digital source is
rear panel. Note that this jack is for userange while reducing the minimum peakplaying, you may not select one of the
onlywith the AC-3 RF output from an LVlevel by 1/4 to 1/3. This prevents abruptlyanalog surround modes.
player and should not be connected to
any other audio, video or digital device.loud transitions from causing distur-
bances without reducing the impact of5. It is not possible to record the output
Digital datastream outputs from DVDthe digital source. The Night mode isof a Dolby Digital program.
players, HDTV receivers and CD players
should be connected to the AC-3/PCMavailable only when AC-3 signals with
special data are being played.
Opticalor Coaxialinputs ? fon the
AVR55 120 volt |