In 2012 the assembly hall of the state parliament of North-Rhine Westphalia, located in Duesseldorf, Germany, was renovated extensively. In this context the floor structure has been changed to improve the situation for handicapped delegates and guests. The new sound design have to solve two tasks, namely excellent sound coverage from the lectern and president’s position and sound localization for speeches from a delegate desk by using a kind of a new delta-stereophonic network. The paper will explain all design issues including new microphones on the lectern. The issue to fit the new speaker systems and the new microphone types into the architectural environment is discussed as well the start of renovation of the visual systems.
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