The audiovisual systems of the three largest lecture halls in the new building of the Technical Faculty of the Debrecen University were installed by our company. The various systems of the rooms are connected to each other. Two IVS line speakers provide proper speech intelligibility in each room. The interface in the pulpits makes the devices of the systems simple and easy to use. Apart from the visual and sound technologies, all the three rooms have an interpretation system with 60 wireless receivers in each room.