Boss Audio 550B User Manual - Page 7

GENERAL OPERATION Turn Unit On/Off Press the power ( ) /SRC button to turn on the unit. Press and hold it to turn off the unit. Press the power ( ) button on the remote control to turn the unit on or off. Adjust Volume (VOL) Rotate the VOL knob on the front panel or press the VOL+/- button on the remote control to increase or decrease the volume level. Adjust Menu Options (SEL) ‡ Press the SEL button repeatedly to cycle through the following adjustable audio functions: BASS, TREBLE, BALANCE, FADER, EQ OFF, LOUD OFF, DX, STEREO and VOLUME. ‡ Press and hold the SEL button to access these additional functions: VOL (LAS/ADJ), AREA EU/US, Clock 12/24, and BEEP ON/OFF. ‡ Rotate the VOL knob on the front panel or press the VOL+/- button on the remote contol to adjust the selected item. Set the Clock (CLK) 1. To display clock time, press and hold the CLK button on front panel. 2. To set clock time, press and hold the CLK button and the hour will 3. Press the or button or press the NEXT or PREV button to adjust the hour. 4. Press the CLK button and the minutes will 5. Press the or button or press the NEXT or PREV button to adjust the minutes. 6. Finally press and hold the CLK button to confirm the time adjustments. Mute on/off (MUTE) Press the MUTE button on the remote control to toggle mute on or off. The muted state will be also released, when the volume knob or VOL+/- button are used. Change the Source (SRC) Press the SRC button to switch between RADIO, BT, DISC, USB, SD and AUX-IN modes. Loudness on/off (LOUD) Press the LOUD button on the remote control to turn on the loudness to reinforce the output of bass frequencies, press again to turn it off. Preset Equalizer (EQ) Press the EQ button on the remote control to choose a desired preset equlizer mode: OFF, FLAT, POP, ROCK, CLASS. Reset System (RESET) The RESET button is used to reset all parameters to factory default settings. This function may be used when the LCD does not display normally or sound is distorted, or when any of the controls are disabled. To reset your system, use a thin object with a pointed end to depress the RESET button. 5