Very respectful thread fellas and all information is very much valid on my 2014 gmc terrain slt2 with the pioneer system. I did go with low level brown, brown/white. Tan,dark blue but I definitely gave both sides of the amp a chance and high level sounded horrible low level hz has a lot more bandwidth. Setup is as followed, spl thick mat sound dead on floor walls and roof. 2 nemesis audio na-2km strapped ,single ds18 exl15.2 ,4th order kerf slots birch enclosure, 4 runs of 0g copper tinned wire , 1 lithium bank , Raggie 320amp alt , diy 3d printed fuse block , burg tooling lug adapters 2/1 0g to 4g . I run 1ohm but I meter @ .5ohm . 149.6db is pb.