what does htis do?

[fisherpricekid 10+ year member]

on my alpine cdm-7857 it has a display feature where i can change my colors but then i can change this thing on or off and it says OLI on or off? wtf is that!?

and it has bass freq control but to me it doesnt seem to be working !? i have a 10" pioneer hooked up to it my amp !? is this a built in crossover so i dont need to use my lp on my amp? and also it only has 2 sets of preouts!? so im confused im new to this alpine business!? it has a 60/80/100/200 choice and my lp on my amp is 80hz ?

any help would be great!? thnx

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[adamS 10+ year member]

the bass freq is controlled useing the track select buttons.

 

[fisherpricekid 10+ year member]

yeah i figurd that but i dont seem to hear the diff when i change it?! but really do u know what OLI (on of off) does?