@noromance OP is using Klipsch Fortes in a small room. He's already overpowering the room. Be that as it may, and much as I love the REL T/series, they're simply not a good match for the Klipsch. IMHO in an 11X11 room first he needs acoustic treatment and bass traps, then rethink the entire speaker setup. With something more to room scale for both the mains and subs. JBL 4309 and REL T/9x comes to mind.
Rel t9x or Rythmik F12G
Trying to decide between these two. Similar price. I have a small room (11 x 11) and I am trying to compliment Klipsch Forte 3’s. Looking for the best sounding bass for music only. Anyone have experience with both that can expound on the differences? Amp is a PL Evo 400. I also use a Dynaco solid state rebuild amp. Thanks