I was a part of a team that designed, tested, built and iterated a "do it yourself" speaker kit targeted at children 10 and up. The kit provided a unique and gratifying experience for the builder. They would both learn about how speakers work, as well build a set of speakers that produce high quality sound. The kit was designed so that the children could build it entirely by themselves. The team went through four complete design/build/test cycles, changing the design and manufacturing methods at each step based on user feedback.