I ran my Infinity Rennasaince 90's with a KSA200S and the setup worked well. Now I use a FPB300cx. I had issues with the KSA. I also don't recommend shipping that behemoth, as that is how mine got scrapped by FedX comming back from Krell. If your Kappa's are the 9.1's with the bass switch you will need serious power. There is a Infinity Classics web site with a lot of info if your interested. Google it if you want.
Good luck, John
Good luck, John