The Kappa's are suppose to be Infinity's top of the line automotive speakers. Humm...the specs I've read show that the Kappa's have better specs than the Reference series, particularly in the bass. Whatever. I don't get the huge bass like a subwoofer gives, but I like the balanced sound stage of my current system. Us old farts like to keep as much of our hearing as possible. Besides, I got enough REALLY LOUD music back in the sixties and early seventies.
BTW - If you want Infinity Reference, they go pretty cheap on Ebay; about $100 for 6x9.
-Wes
98 SE Sport