Using external sources, Managing black bars – Rosen Entertainment Systems T12 User Manual
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Rosen T10/T12 Owner’s Manual
USING EXTERNAL SOURCES
You may use optional external video games, camcorders, and other 
portable video units by connecting the unit to the auxiliary RCA input 
jacks on the unit. You must press SOURCE to select “Auxiliary 1.” 
Red — Right channel audio input
White — Left channel audio input
Yellow — Video input
To use an external game system, a 12VDC to 110VAC power inverter, 
available at most electronic retail stores, is often required.
Note:
If you want to watch non-widescreen, 4:3 images, press
the DISPLAY button on the remote control until “STANDARD” 
is displayed on the screen. This will properly size the image, 
instead of stretching the image across the wide screen. In 
“STANDARD” mode, you will see black bars on the sides of the 
image, like this:
Color-Coded RCA Jacks
Motion picture fi lm and cameras, and later tele-
vision screens, were originally designed around 
a screen size that was almost square - it was 
one-third wider than it was high (another way to 
say this is that it had a width-to-height ratio, or 
aspect ratio, of 4:3. This ratio, 4:3, can also be 
expressed as 1.66:1.)
When widescreen movies using technologies 
like Cinemascope and Panavision became 
popular, new aspect ratios were used for them 
- 1.78:1, 2.35:1, and even 2.55:1. When high-
defi nition television was developed, a screen 
shape of 16:9, or 1.85:1, was selected as the 
best compromise for viewing widescreen movie 
images. 
When you watch widescreen movies on a 
standard 4:3 television, there are “black bars” 
on the top and bottom of the screen. This is 
often called a “letterbox” image. The alternative 
is called “pan-and-scan,” where the edges of the 
image are “cropped” off.
This system uses a widescreen 16:9, or 1.85:1 
display - the same aspect ratio as high- defi ni-
tion televisions. This means that when viewing 
widescreen DVD’s, these black bars are either 
non-existent, or greatly minimized. 
4:3
1.66:1
16:9
1.85:1
MANAGING BLACK BARS
Letterbox
Widescreen
 Note: If your dealer has connected a remote Audio/Video 
panel DO NOT attempt to use the console mounted auxil-
iary input simultaneously.
