I'm in the process of making my own, but you need a fairly good assortment of woodworking tools to get started. But spending $150 on speakers that will own anyting at a chain store will be nice. Here's a link to a good kit if you don't have the ability to make your own cabinets. You just solder together the crossover and screw the drivers to the baffle and you're done.
http://www.partsexpress.com/pe/showd...number=300-640
Here's what I'm building
http://www.partsexpress.com/projects...ilee/index.htm