I took some of your sugestions for upgrades, I moved the center chanel to the floor and added more power to the front speakers. Now have a much better 2 chanel sound and better sound from the center chanel. Thanks for the ideas.
I agree with Bw_4_all, if you really want to let those 803s shine you should throw in some better power (more and cleaner). There are thousand choices...maybe the Parasound Halo JC-1 monos? If you can find some old aragon amps those would match well too.
