Alpine HDS-990 HDS-990 Owners Manual - Page 22

set to "Auto", which can reduce the lighting brightness of the host controller when the car's headlights are ON. This mode is very useful if you feel that the backlight of the host controller is too bright at night. Dimmer Setting items: Dimmer Setting content: Auto/Manual (initial setting) Dimmer level Setting items: Dimmer level Setting content: Level 1 / Level 2 / Level 3 (Initial setting) Blackout Settings Setting items: Blackout Setting content:OFF (Initial setting)/ON Alpine System Select [Alpine System] from the general page. Refer to step 1 of "General Settings" (page18). Alpine system matching External DSP: setting) ON/OFF (initial Master volume Main source Mix source Subwoofer Sound effect  Alpine system matching 1 Rotate the encoder to select the target item, then short press the encoder to select the target item to adjust. 2 Turn the encoder to the left to select [] operation. Setting content:OFF(Initial setting)ON/ Master volume / Main source / Mix source / Subwoofer / Sound effect It can be connected to Alpine car DSP, and only supports products that can be connected to the controller interface. External Power AMP Switch Setting items: External power amplifier switch Setting content: OFF (Initial setting)/ON Master Volume Setting items: Total volume Setting content: 0～35 (Initial value: 27) Main Source Setting items: Main source Setting content: Digital/High Level/ Bluetooth/AUX Mix Source Setting items: Mix source Setting content: Digital/High Level/ Bluetooth/AUX/OFF Subwoofer Setting items: Subwoofer Setting content: -60dB ～ 0dB (initial value: 0dB) Sound Effect The Mix source can be selected according to needs. Setting items:Sound effect Setting content: 6 groups of preset sound effects can be called  Refer to the setting of connecting PXE-0850X for the above external DSP. For details, please contact your Alpine dealer. 19 EN