installationnews GERMANY QSC kit is star attraction in Jena
THE ZEISS Planetarium in Jena, eastern Germany has upgraded its audio system with QSC CX Series amplifiers and AD-S loudspeakers.
The audio sources used in the planetarium’s presentations are digitised, processed by powerful PCs in real time, placed in a 3D soundstage
and manipulated, and then converted back to analogue signals before being passed to the loudspeakers. Up to 64 analogue signals at once are then passed to a total of 16 QSC CX254 four-channel amplifiers to as many as 60 two-way QSC AD-S82H loudspeakers, while four subwoofers take care of the lower frequencies. Some 46 of the 60 full-range
The projection dome had to be taken into consideration when choosing an audio system
speakers are located in the gallery, the remaining 14 behind the perforated metal covering of the 14.5m-high projection dome. Because the dome is not quite a perfect circle, and is slightly flatter at the sides, the seating faces a particular direction rather than being concentric. The sound systems take account of
Sixty two-way QSC AD-S82H loudspeakers have been installed
this; near the front of the dome the QSC AD-S82Hs are also closer together than at the rear, because human hearing is better at picking up sounds coming from the front than the rear.
According to Jürgen Hellwig, the planetarium’s director, the Zeiss has recorded a record number of visitors for a single month after the newly installed system was opened to the public.n www.qsc.com
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