Installing adjustable Line Converter

[SC V6]

I am attemping to hoook my subs up in my truck, and Have a audiolink Powerlink II I am going to use. It has level adjustments and I am not sure where they are supposed to be set to.

Can someone explain the adjustment process?

Here is the one I have
http://www.linkmeup.com/prod03.htm

[hari-bhari]

on my LOC, I kept the adjustments on the converter all the way up. that way you can keep the gain on the amp as low as possible, resulting in cleaner sound.

[Wang2k]

i used to do it like that too. all the way up and lower on the amp gain.