run the RCA outs to an amp for the rear sub boxes. Run the fadeable fronts and rears on high level. Usually these head units have pretty decent power for stockish car speakers, ie 5.25 rounds and 6X9 rears. Those FM modulators suck. In a pinch they work but you'd be year ahead buying a later model with a CD interface and the matching CD changer. Whats the Kenwood model number?
