So i have a 2018 chevy cruze lt stock HU with a skar 12"evl at 1 ohm in a ported sub zero box and a skar rp1200.1d amp right now i have bass eq at 0 gain is lil more then 3/4 up lpf all the way down and subsonic all the way down... it hits really hard even cracked the 3rd brake light only thing...