ESC 550 Source (serv.man17) - JBL Audio User Guide / Operation Manual. Page 17

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1. Dolby Pro Logic – In this
mode all five speakers are
used.

2. Dolby Pro Logic Phantom –
In this mode the center 
channel does not operate.
This may be preferred when
listening to a music source
that was not recorded with
surround channel information.

3. 2-channel – In this mode
the program is played back in
a traditional stereo form.

Dolby

*

Pro Logic

*

is an

encode/decode process by
which four channels of sound-
track information are encoded
into two channels for playback
on VCRs, laser disc players,
and some TV broadcasts, and
then decoded back into four 

channels for playback through
five loudspeakers. Remember
that a Dolby Pro Logic system
consists of three channels of
information for front left, 
center, and right speakers and
one channel of mono surround
information. The surround

channel is played back
through two speakers. Dolby
Pro Logic helps to re-create all
of the impact and excitement
of a movie theater in your
home.

To switch between the three
surround modes: Push
“Surround Mode” on The
Source or 

the remote control.

If you are listening to a pro-
gram in the Dolby Pro Logic
Normal or Phantom mode 
and you wish to turn off the
surround speakers:
Push “Rear Speakers” on 
The Source.

This system contains three surround modes.

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ESC550 Simply Cinema OM  7/22/98 4:34 PM  Page 17