V-AVM651F37In SYSTEM SETUP menu rotate the TUNE/ENT knob on the panel or /or / buttons on the RC or press the needed button on the display to selectthe desired menu: ASP CONFIG, GENERAL SETUP, SCREEN CAL. PressPLAY/PAUSE button on the RC or TUNE/ENT knob on the panel or press theneeded button on the display to enter the menu selected.1. Enter the needed menu2. Rotate the TUNE/ENT knob on the panel or / buttons on the RC orpress the needed button on the display to select the needed setting.3. Press the TUNE/ENT knob on the panel or / buttons on the RC or press the needed button on the displayto enter the list of values.4. Press / buttons on the RC or press the needed button on the display to select the needed value.5. Press PLAY/PAUSE button on the RC or TUNE/ENT knob on the panel to confirm.Audio sound processing (ASP) configurationBass center frequency: select the Bass center frequency according to theaudio source disc: 40 Hz, 50 Hz, 60 Hz, 70 Hz, 80 Hz, 100 Hz, 120 Hz, 150Hz.Bass Q-factor: when the Bass center is selected and adjusting the Q-factoralters the sharpness of the Bass output, the larger the Q-factor, the sharper thebass. Select the Bass Q-factor: 1.0, 1.25, 1.5, 2.0.Bass DC Mode: the gain of bass below bass center frequency will increaseand the Bass Q-Factor will decrease if you select On.