Solid core plates coloured in white were used in the renovation of the Siemens Auditorium. The panels have an acoustically effective slit which is backed with a special fleece. Double-walled seats from the CLASSIC range and single-walled backrests were used for the seats. The upholstery is designed as a separate flat cushion. Due to the closed construction, this hall has a particularly beautiful effect. Electrical sockets are built into the rear panel.