Nice! Fine Woodworking Nice! I can't believe people want more bass output than the Theatre 4's have. It's all a function of what you listen to. My Delta's are long gone and I have tried several schemes for mating a sub to the 2226's. 4648 with plate amp and titanic 12 with plate amp. 4648 is best but still too heavy to integrate with music. And doesn't really go deep. The Titanic goes waaaay deep; when the ship lands at the beginning of Attack of the Clones (terrible movie) and the explosions according to a website are 17 Hz, the Titanic just yawns and moves the entire building. My Theatre 4's had Delta Pros which don't go as low as regular Deltas and still had more output at 40 Hz than classical/jazz/Rolling Stones needed. To each his own.