To create a truly high-end surround sound experience, satellite speakers must meet three main requirements. First, the speakers must present a relatively benign impedance load so they can be easily powered by a multi-channel receiver. Second, the speakers must be able to achieve the desired playback level without excess distortion. Finally, the speakers must play low enough that they can blend well with a subwoofer. If all you are worrying about is meeting those three sonic goals, there are many existing designs available that will suit your needs. However, it becomes a little trickier when you are trying to meet those goals and keep the speakers as small as possible. So, the most challenging goal for this design was to create a home theater system that can play adequately loud for small-to-medium living rooms and still be of diminutive size.