Boss Audio Systems BV6820 User Manual page 22

HUE
It is for adjusting the hue of the video output.
SATURATION
It is for adjusting the saturation of the video output.
SHARPNESS
It is for adjusting the sharpness of the video output.
4.24.5 SPEAKER SETUP
DOWNMIX
It is for selecting your desired sound effect when there is no center speaker
and subwoofer. There are 3 modes: 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.
4.24.6 DIGITAL SETUP
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.