I’m considering building a pair of speakers to replace my current midrange bookshelf speakers. I’ll be using them for composing but since I’ve been mixing on consumer bookshelf speakers for years (and checking mixes w/headphones) I figure the bar is fairly low for my own DIY build. 
Has anyone built their own speakers before? I started experimenting with dayton audio exciters a couple years ago and ever since Parts Express has been sending me catalogs and newsletters with DIY speaker projects that seem not impossible for the layperson to tackle. They actually have entire speaker kits for various types of speakers and they’re all pretty inexpensive – compared to a normal set of midrange studio monitors anyway.
If you’ve built DIY speakers from plans or kits or your own design, would you do it again and/or recommend it to a beginner? What are good resources for DIY speaker building?
Thanks!