I did not take this video, nor was I there. I don't know the specifics of the box or any other info other than what is posted in the video. What I know is that those woofers are rated for 800watts RMS and I had heard rumors of them taking a GZPA 1.4000 but this is the first I've seen of it.
We have several retailers that have been testing these woofers and have heard nothing but good from them. Brandon @ Audio Anarchy has one and will be doing a video and review of the sub and our Titanium 1.800.
Here is the video link: http://m.youtube.com/watch?v=2sfiE29yxQs