JVC TH-C20 ユーザーズマニュアル

7 MONITOR TYPE

You can select the monitor type to match your TV when you play 
DVDs recorded in the picture’s height/width ratio of 16:9.
• 16:9 (Wide television conversion)

Select this when the aspect ratio of your TV is fixed on 16:9 (wide 
TV).
When you play DVDs recorded in the picture’s height/width ratio 
of 4:3, the system adjust the ratio of output signal automatically.

Select this when the aspect ratio of your TV is 4:3 (conventional 
TV). While viewing a wide screen picture, the black bars appear 
on the top and the bottom of the screen.

Select this when the aspect ratio of your TV is 4:3 (conventional 
TV). While viewing a wide screen picture, the black bars do not 
appear, however, the left and right edges of the pictures will not 
be shown on the screen.

• Even if “4:3 PS” is selected, the screen size may become “4:3 LB” with 

some DVDs. This depends on how DVDs are recorded.

7 PICTURE SOURCE

When you set the scan mode to “480p” (see page 16), you can obtain 
optimal picture quality by selecting whether the content on the disc/
file is processed by frame (film source) or by field (video source).
Normally set to “AUTO”.
• AUTO

Used to play a disc/file containing both video and film source 
materials.
This system recognizes the source type (video or film) of the 
current disc/file according to the disc/file information.
If the playback picture is unclear or noisy, or the oblique lines of 
the picture are rough, try to change to other modes.

Suitable for playing back a film source disc/file.

Suitable for playing back a video source disc/file.

7 SCREEN SAVER (See page 19.)

You can activate or deactivate Screen Saver function.

7 FILE TYPE

When several types of files are recorded on a disc/device, you can 
select which files to play.
• AUDIO

Select this to play MP3/WMA files.

Select this to play JPEG files.

Select this to play ASF/MPEG-2/MPEG-1/DivX files.

7 D. RANGE COMPRESSION

(Dynamic range compression)
You can enjoy low level recorded sound clearly at night even at a low 
volume when listening to the sound with Dolby Digital.
• AUTO

Select this when you want to enjoy surround sound with its full 
dynamic range (no effect applied).

Select this when you want to fully apply the compression effect 
(useful at midnight).

• When you play a multichannel Dolby Digital source with the 

surround mode is off, the setting of D. RANGE COMPRESSION is set 
to ON automatically.

7 Level menu (LEVEL)

FRONT LEFT SPEAKER/FRONT RIGHT SPEAKER/CENTER 
SPEAKER/SURROUND RIGHT SPEAKER/SURROUND LEFT 
SPEAKER
While monitoring the test tone, adjust the center and surround 
speakers volume as much as that of the front speakers.
You can adjust the output level in the -6 dB to +6 dB range.

TEST TONE*
Outputs the test tone.
*

The test tone comes out of all of the activated speakers in the 
following sequence:
s Front left speaker s Center speaker s Front right 
speaker

 s Surround right speaker s Surround left speaker 

s (back to the beginning)

• Adjustment of subwoofer output level is not available.

7 Delay menu (DELAY)

Example:

Set to “0 ms” for the furthest speaker from your position as the basis 
for the delay time setting.
In this case, set the delay time of each speaker as follows;
• Delay time of front speakers: 0 ms
• Delay time of center speaker: 1 ms
• Delay time of surround speakers: 2 ms
FRONT LEFT SPEAKER/FRONT RIGHT SPEAKER/CENTER 
SPEAKER/SURROUND RIGHT SPEAKER/SURROUND LEFT 
SPEAKER
Adjust the distance from the listening position to the speakers.
Within the range from 0 ms to 15 ms. (by 1 ms)

Ex.: 16:9

Ex.: 4:3 LB

Ex.: 4:3 PS

Subwoofer

Front left

0 ms

Center speaker

1 ms

Front right
0 ms

Surround left

2 ms

Surround right
2 ms

1 ms increase (or decrease) in delay time corresponds to about 
30 cm (1 ft) decrease (or increase) in distance.

3.0 m
(10 ft)

2.7 m
(9 ft)

2.4 m
(8 ft)

2.1 m
(7 ft)

TH-C20-30[JC]5.book  Page 34  Thursday, January 12, 2006  11:29 AM