Noah at Instructables writes:
Building your own custom speakers has got to be one of the most rewarding, straightforward and cost-effective DIY activities I’ve come across. I’m absolutely shocked that it hasn’t had a larger presence on Instructables and in the community…well, until now of course.
Some speaker projects can be complete in a weekend, while others can go on for years. Budget speaker kits start around $100, while top-of-the-line kits and components can add up to several thousands of dollars. Regardless of how much you choose to spend on your speakers, you’ll likely be building something that will sound as good as commercial product that off the shelf would cost as much as 10 times more.
You can win the speakers noah made in the Art of Sound contest.