Lenco CS-470 DVD - Manual (Page 21)

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4.23.5 SPEAKER SETUP
DOWNMIX
It is for selecting your desired sound effect when there is not central
speaker and subwoofer.
There are 3 mode: LT/RT, STEREO, VSS.
LT/RT: When playing a disc with PRO LOGIC Dolby stereo effect,
choose the item, so it will output audio signal with vivid theatre effect.
STEREO: If you choose the item, when outputting audio signal with
5.1 channels, it will output the left and right channels of signal ;
when outputting audio signal with 2 channels, it will output the common
2 channels of stereo signal.
VSS: If you choose the item, when playing a disc recorded with 5.1 channels,
the main channel speakers can output audio signal with VSS effect.
4.23.6 DIGITAL SETUP
OP MODE
It is for selecting audio output mode
LINE OUT: It can linearly compress the audio signal. So the volume level
is lower. You should select the item at night.
RF REMOD: It can make the volume level higher.
You should select it at daylight.
DYNAMIC RANGE
After selecting the compression mode of LINE OUT, set the item, so you
Can adjust the linear compression ratio. If you set it to be FULL,
the Peak-to-Peak value of the audio signal is the minimum; if you set it to
be OFF, the Peak-to-Peak value is the maximum.
DUAL MONO
It is for selecting a desired audio output mode for the left and right ways of signal.
It is mainly for Karaoke of Ac3. There are 4 modes in all as follows:
STEREO, MONO L, MONO R, MIX MONO.