Since 1995, Horst-Dieter Käppler
has been the Semper Oper's chief sound engineer. He was responsible
for planning the Opera's new audio system.

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Semper Oper Dresden
NEXUS on the Run
Noteworthy from outside, exceptionally
impressive inside, and fully digital behind the curtains: Semper Oper in Dresden
has a NEXUS as the centerpiece of its comprehensive audio system. Horst-Dieter Käppler
from the Semper Oper gives the details.
Mr. Käppler, you have a large NEXUS system with a total
of 9 racks and roughly 160 inputs/outputs. One of the base devices
is mobile, not permanently installed. Why?
We have put one NEXUS each in our production studio, playback studio,
and on the stage. Sometimes, however, we need inputs and outputs in even
more different places. For example, you might want to have a playback
in the orchestra's rehearsal room. For this purpose, we have provided
fibre-optic sockets there and in other places where we can connect our
mobile base device.
Was this flexibility a reason for your decision to use the
NEXUS system?
Yes. Actually, that was the main reason because our production and playback
studios are located in two different buildings that are connected via
the NEXUS routing system. All the microphone channels now connect centrally
to the NEXUS system and can be made available at any of the base devices.
As you may imagine, this significantly simplifies wiring.
Besides the mobile base device, your installation has another
feature: the connectivity to Yamaha mixing desks …
We use the Yamaha 02R digital consoles that require Y2-format audio interfaces,
while our DAT recorders and effect units have, of course, AES/EBU interfaces.
One of the benefits of NEXUS is that it does not need additional format
converters to cope with this.
Mr. Käppler, one last question, what was your premiere
of the new system?
Let's see, our first night was a TV gala for German television, the ZDF
in that case. It was on 13 September 1996, and it ran absolutely smooth.
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