open circuit is a sound installation by christoph haag, martin rumori, franziska windisch and ludwig zeller. the team created the project while studying at the academy of media arts cologne. open circuit consists of a labyrinth of open copper trails that cover the floor and walls of the installation space. these trails carry the electrical signals of a multichannel sound repository which become audible when wireless speakers are placed on the copper. the sound emitted by the speakers alters depending on how they are moved.