Right now these are the specs on my system Car: 1998 nissan sentra Head unit: Alpine CDE-7870 Amp: sundown saz-1500 Battery: kinetik 1400 front and 2400 rear Subs: 3 DD 1008a's Wiring: Knuconceptz I'm having a box built for my 3512 which will run at 1 ohm then when I can sell these 8's i'm getting a dual 1.5 hd315