1) Ascend Acoustics Sierra Tower with RAAL: <$3000 shipped, more for custom finish.
2) Add a subwoofer(s): If you can do bass management and have RCA output for the sub, get a Rythmik (their subs have less distortion than Velodyne chats costing 3x as much). If you need to have speaker wire in/out, look to SVS. You want >12” for that space.
2) Add a subwoofer(s): If you can do bass management and have RCA output for the sub, get a Rythmik (their subs have less distortion than Velodyne chats costing 3x as much). If you need to have speaker wire in/out, look to SVS. You want >12” for that space.