Sven writes “About a year ago, inspired by other projects like Afrotech’s Hard-disk Sound System, I built a first version of my harddisk speaker. The first one was just a very quick hack to see if it would work and was destroyed due to too much power melting the coils and cables. We hooked it up to a 50W guitar amp and pushed the volume a bit to far… Since it sounded really great, I decided to build a second one.” Link.