Farenheit 7” Wide Touch Screen 1-Din Oversized Fully Motorized TFT Monitor/DVD/AM/FM Built-In TV Tuner Operating Manual page 36

AUDIO SETUP
BASS:
TREBLE:
BALANCE:
FADER:
MORE AUDIO SETUP
SUB-WOOFER FRQ: 80HZ – 120HZ – 160HZ – OFF – 80HZ
SUB-WOOFER VOL: 0 ~ 15
- 15 ~ + 15
- 15 ~ + 15
L 15 ~ R 15
F 15 ~ R 15
- 35 -