I use a B&W DB3D located behind my rig firing the drivers to the side walls. It supports my A5's at the low end and pressurizes the room at the same time. For me, the perfect sound.
Sub Confusion
I've decided to add a REL sub to my in-den 2-channel system. My room is 12'-0 x 15'-6 x 10'-0h with PMC Fact 12 speakers 3'-0 out from the short wall. I have GIF corner base traps (43"h) in the front corners. My integrated is a DarTZeel LHC-208, and my DAC is an Aqua Formula xhd rev 2. When I go to REL's website to match a sub to my speakers, they recommend a 212SX (at $4,999). For my space, these seems to be overkill. Why not a single S510 (at $2,749) or two T7X (at $1,099 each)? Or? My goal is not more base- I'm looking to free my PMCs from having to expend energy to produce sound below 80 Hz and increase depth. Looking for input from our members. Thanks