Sure have bro. Funny that Infinity claims the Kappas are 2 ohm but on the box it also says they are 4 ohm. Typo maybe? I think not. If the Kappas were true 2 ohm speakers, the majority of head units wouldn't be able to power them. Every head unit, even my old ass Pioneer from 1912 powered my old Infinity Kappas. Since then I have moved onto bigger and better speakers, but for the money they are nice. They are on the harsh side so using your EQ is a must.