I have these with a Pass X250 amp and they are the best speaker I ever owned. My room is small (11 x 18, open behind my seating area into another room) Speakers on the short wall. I had to use treatments Big DIY Bass trap and 6 inexpensive pannels. I used the cardas method and toe them in to face my ears. They are about 55" from front wall and 30+ to the center of the woofer from the side wall I sit 9 ft away.
I have spent many hrs playing around and even used a spectrum analyzer to get the best placement for smoothest response.
I'm looking at changing cabls soont, I dont feel the Kimber TC8 and Elco Silver are a good match. I do know Bi-wire is the way to go and I'm looking at Nordost Red Dawn or Accoustic Zen.
What cables are you using?