power wire location
Would it be possible for you to snap a quick picture of the power wire location you used? I used 4awg power also, and the only place I could find was through the grommet for the hood release cable. its a little cramped, and I would rather find a better location to run it.
I may also look into that LOC you are using. I just used two PAC basic converters, previous to knowing the bass rolloff issue. my Infinity's sound pretty hollow. Now I know why!
Great install, btw.