Boss Audio Systems 812UAB User Manual page 3

Common operation:
1. To turn the unit on/off .
When the unit is power Off, it may be switched On by pressing any button except
RELEASE button.
When the unit is switched On, press and hold POWER button for more than 1
second, to switch the power off.
2. To select function mode
Press MODE button to change function mode as follows:
-->TUNER -->USB(after inserting USB stick)-->CARD(after inserting SD card)-->BT-->
AUX-->
When there is no media (USB/CARD), that mode will be skipped.
3. To adjust the volume level
Rotate VOL knob or press + or - button on remote control to adjust volume level during
playback.
4. To mute or resume sound
Press MUTE button to eliminate or resume sound immediately during playback.
To resume the sound immediately, you can rotate VOL knob.
5. To set sound mode and menu
1).To set sound mode:
Press SEL button shortly and repeatedly to select mode of VOL(volume), BASS
(without preset DSP), TRE(treble)(without preset DSP), BAL(balance) and FAD
(fader) in the sequence and circulation. In each mode, the waiting time is about 5
seconds, and when the waiting time is over, it will return to the last display mode.
After selecting a sound mode, use volume control to set level of the selected sound
mode.
2).To set menu:
Press SEL button and hold for more than 2 seconds to turn on BEEP ON/BEEP OFF,
then press SEL button shortly and repeatedly to select USER SET (FLAT/CLASSIC/
ROCK/POP), VOL LAST/VOL DEFA(AVOL) , AMERICA3/EUROPE(in RADIO mode),
STEREO/MONO(in RADIO mode), LOUD OFF/LOUD ON, DX/LOCAL(in RADIO mode)
CLK ON/CLK OFF,CLK 12/CLK 24,CL(Adjust the clock))mode. After selecting a desired
item, use volume control to set.
3) BEEP ON/BEEP OFF
BEEP ON mode: The beep is generated when any key is pressed.
BEEP OFF mode: The beep sound is disabled.
4) VOL LAST/VOL DEFA
VOL LAST: The volume level when switching off will be restored with power On.
VOL DEFA: The volume level of the main unit after power on is a constant valume.
when selecting VOL DEFA item, press SEL button to display AVOL , then
you can pre-set the constant volume level after power on with VOL control.