I'm not 100% sure, but aren't the speakers in a RF unit all paralleled 8 ohm speakers? Meaning each front component(the door speaker and tweeter)are each 8 ohms thus creating a 4 ohm load on the amp. same thing with the sub and it's tweeter, and the 6X9 and it's co-axial tweeter. And an amp doesn't give off 2 ohms it recieves a load, which can be stable to 2 ohms, 3 ohms, 4ohms, or whatever.