sorry for the late response, I was out of town.
Originally Posted by chrapladm
Because I keep thinking about doing an ottoman now, how much height did the upholstery add?
I designed the box with the upholstery in mind. I used a higher density foam that's not quite as thick. It's not as cushiony as some, but soft enough to be comfortable. If your box isn't as high you can use thicker foam or thick and thin foam to make is plush.
And did you ever get a chance to get a picture of the wiring?
It's just wired like any other sub. The hookup is on the bottom.
I thought about using some large flat/wide speaker wire if I built one.
That sounds like a good idea. If you're running it on hard floor then you'll want one of those wire protectors you lay over it. If you can get under the floor you could run it below and up through. A good idea is to make it quite heavy so people aren't attempted to move it to suit their needs.