Turning media xpander on/off, Setting the mx level, Subwoofer on and off – Alpine IDA-X300 User Manual
Page 25: General setting, Setting the clock display (clk mode), Connecting an mp3 changer (play mode), Sound (beep) guide function (ida-x200 only), Turning mute mode on/off (int mute), Setting the aux+ mode, Operating the external audio processor

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