JBL DVD600 Owner'S Manual Download Page 52

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Configuring the DVD600 DVD Changer

(Continued)

Setting the Aspect Ratio

The aspect ratio of a television picture is the
relationship between its width and height, and
it defines the shape of the picture. Television
sets have traditionally had an aspect ratio of
4 x 3, which is to say that they are almost
square, with slightly more width than height.
Almost all television programming is presented
in the 4 x 3 aspect ratio so that the pictures fit
within the confines of the TV screen.

Movies, on the other hand, have a variety of
what are known as “wide aspect ratio” formats
that are significantly wider in relation to their
height than traditional television pictures.
Indeed, the development of wide-screen movies
was something that was popularized in the
1950’s in response to the success of television;
movie producers wanted to provide a wider
vista than afforded by TVs.

However, since many movies are produced for a
wider screen than the TV set they are played on,
a problem arises that is like fitting a square peg
into a round hole. In many instances this is
taken care of by the disc’s producers, who refor-
mat the image to fit within a standard 4 x 3 TV
screen. Discs such as this require no special
setting. The only downside to this is that when
wide-screen movies are converted to 4 x 3,
some of the information at the sides of a scene
may be cut off due to the difference in picture
shape. This is also called a “pan and scan”
presentation, as a 4 x 3 viewing area is moved
across the wider cinema image.

Other discs are produced in what is called a
“letterbox wide-screen” format. In this case, the
entire wide image is fit inside the 4 x 3 screen
shape from side to side. This means that you
see the entire picture as the movie’s director
intended, but the height of the picture is
reduced to accommodate the added width. The
blank areas that appear at the top and bottom
of the screen make the image in the center
appear as if you are looking through a mail slot,
giving this sort of presentation the nickname of
“letterbox.”

The DVD format accommodates both of these
formats, though it is up to the producer of the
disc to select which way to convert the movie to
video. Sometimes you will have a choice of only
one of the two formats, while some discs offer
a full screen, with the pan-and-scan version on
one side of a disc and the widescreen, but
letterbox version, on the other side.

The DVD600 will play either type of disc, and
you may select a default that tells which way to
present the image when there is a choice.

To select an aspect ratio default, you must be
viewing the Setup Menu (Figure 1), which is
available by pressing the

Menu Button

while the unit is in the Stop mode. At the Setup
Menu, press the

Button

until the

Aspect Ratio option is highlighted. Next, press
the

Enter Button

. Select one of the three

choices in the options box (Figure 13) using the

⁄

Buttons

Figure 13

Depending on the type of television set you
have, choose one of these three options:

•

4 x 3 Letterbox: Choose this setting if you
have a standard 4 x 3 television set and
prefer to see movies in their original aspect
ratio. You will see the entire movie but, when
it is presented in a letterbox fashion, there
will be black bars at the top and bottom of
the screen. Movies or other programs recorded
in a 4 x 3 format will appear normal.

•

4 x 3 Pan and Scan: Choose this setting if you
have a standard 4 x 3 television set and
always want the image to fill the entire
screen. When a wide screen movie is shown,
you may not see parts of the picture at one
side of the screen or the other. Note, how-
ever, that even when you select this option,
playing a wide-screen-only movie will result
in black letterbox bars at the top and bottom
of the screen. This is due to the way the disc
was produced, and it cannot be changed.

•

16 x 9 Wide-Screen: Choose this setting only
if you have a wide-screen television set
(16 x 9 aspect ratio). With this setting, the
DVD600 will adjust the output for wide-screen
movies so that they fill the entire screen in
the proper aspect ratio. Note, however, that
in this setting a disc recorded in the 4 x 3
aspect ratio will appear in the wide-screen

as a boxed image in the center, with black
columns on the left and right side of the screen.

NOTE:

If the wide-screen option is chosen

and a wide-screen movie is played on a conven-
tional 4 x 3 aspect ratio set, the image will be
distorted due to vertical compression.

When you have made your selection using the

⁄

Buttons

to highlight the desired

option, press the

Enter Button

and note

that the circle next to your choice will fill in. The
menu system will then automatically return to
the status listing.

If you have no other changes to make after set-
ting this default, press the

Menu Button

to remove the Setup Menu from the screen, or
press the

Play Button

to begin or

resume playback.

Setting the Dynamic Range

With the DVD format you have the opportunity
to hear a program’s soundtrack in the most
accurate and realistic presentation possible,
thanks to the use of digital audio technology.
However, in certain instances you may wish to
slightly compress the dynamic range of the audio
output (the difference between the loudest
sounds and the quietest ones) so that you may
listen to a movie at a lower volume that does not
disturb others without losing dialog intelligibility.

In most cases, it is desirable to leave the
Dynamic Range setting at “OFF” so that no com-
pression is applied to the audio, but if you wish
to change to a compressed setting, follow these
steps:

First, you must be viewing the Setup Menu
(Figure 1), which is available by pressing the

Menu Button

while the unit is in the

Stop mode. At the Setup Menu, press the

Button

until the Dynamic Range option

is highlighted. Next, press the

Enter Button

and select one of the two choices in the

options box using the

⁄

Buttons