Stacks Image 27
The soundscape is generated by 58 organ pipes arranged around the central visitors' platform. They are built in ten groups anchored in every second sector of the steel framework on the top of the gasometer's former piston.
Stacks Image 28
The wooden pipes have a rectangular cross section. Painted white, they become a prominent part of the massive metal scaffolding dominating the space. The longest pipe stands almost five meters tall. Filling the whole volume of the gasometer with sound the sound sources also have a commanding physical presence.
Stacks Image 29
The ten windchests supplying air to the pipes are linked by plastic tubing connecting the groups to a central blower unit. The tubing refers to the former use of the gasometer, and, incidentally, the pressure needed to operate the organ pipes is very similar to the gas pressure the building used to hold.
Stacks Image 30
Every pipe is operated by its own electro-pneumatic valve which is connected to a central control unit. The pipe controller is synchronized by signals transmitted from the pendulum driver unit needed to feed kinetic energy to the pendulum by electromagnetic fields. This way, the pendulum becomes a giant metronome.