Hopefully I picked the correct forum. Anwyays, a friend of mine has an 18" movie theater subwoofer (8 ohms). He was thinking of getting rid of it but I talked him into keeping it and using it as a new HT sub. It will most likely be powered at 240 watts (at 8 ohms). He would like the box to be made of plexiglass. I'm not too thrilled on that idea, but it's his HT sub. So I was wondering what kind of box design would be best for this subwoofer, what kind of glue would be needed to put it together, and what would be a good way to attach the sub to plexiglass?