Call Sumiko (REL and Sonus dealers) and ask to speak to Allan Haggar who can help you. Allan has set up Sonus Fabers all over the country with REL and knows how to integrate them very well. The Stentor III IMHO would be a great match. Just my $.02.
Sub or Subs to mate with Sonus Faber Amati Homage
I have a pair of Amati's that I am having a difficult time coaxing bass out of. This problem is mainly due to my listening room being 20 X 20. I have tried several amplifiers and different cables. These speakers are incredibly difficult to place, and my room dimensions make matters worse. I have considered Vandersteen,REL,Aerial, and Talon, but have no experience with any of these. If anyone has suggestions on these subs or any other subs, I really can't afford the big Rel Studio.Please help Thank you very much