Looking at Focal


I'm looking to replace my B&W 803s for the Focal Kanta 3.  It's hard for me to travel so can't go listen. What differences could I expect I have an upgraded Carver TFM 45 & a 1070 Rotel pre.
128x128fertguy
How old are the 803s?  What edition are they?  That amp/pre combo will sound good driving the Kantas but better than the B&Ws is going to depend on which model.  
Those would be the old 803 matrix.  It has been 20 years since I listened to them.  Someone else may have a better POV than me.  
I brought the kanta3 home for a week long demo, they were the store demos and had plenty of hours on them. In my room there was a 10 dB peak at 100 hz down to-20 at 80hz and gone by 60 hz! The mids and treble were smooth and enjoyable and I liked the sound stage, moved them around and in that week couldn’t get the bass right so they went back. The experts say everything below 300hz is the room and my room has humbled larger speakers than these. If I used subs I probably would have kept them but I moved on.