You didnt read the article... you dont need a LOC... just grab the signal BEFORE the Bose amp and its already line level. Go straight to your amp from the rear speakers, do not pass go. This way you can have a "factory" sub fader without using a knob.Wow must have been asleep.
I would just like to clarify the steps necessary to add a subwoofer amp. If I add an Audio Control LC2i LOC the front speakers would be a good spot to take the signal. Meaning the black ane white wire for front left.