I am hooking a Alpine 5 channel amp with 4 new 6.5's and a 12 inch sub to my factory stereo. I only have the 4 channels going in, is there a loc that could be used here. If so, where can I find it online? Thanks

 

Instead of using a basic LOC and getting basic results, why not consider a interface adaptor? If it is a non equalized system, the Audio Control LC6i or 6XS would be an ideal place to start from.