I've owned a projector about 4 years now. When we first started using the projector it was a awesome experience to have a huge theater like image on our wall. We could stay up all night watching movies and be fascinated by the huge screen. Eventually we ended up using it just 1 night a week or...

I've been bored at work today, so I thought I'd design a "theoretical" sub, that I may build (one day). What I'm thinking of is the following: Using a sonotube for the body. I want to mount 2 12" Dayton HO Subs Sealed. If I did the math right, and used the software correctly, I think winISD...