Sochi, Russia | February, 2014 - The Sochi Olympics have gone to the history books, and as is always the case, the brief few days the games are held belies the immense time and effort preparing for them. In Sochi, a dozen new world-class venues have been erected for the games, and outfitted with high-performance audio, video, and lighting systems.
Avallon, Ltd of Moscow designed and installed multiple Renkus-Heinz systems in no fewer than five Olympic venues. The most prominent project was the Arena Isberg, home to the figure skating and short track competitions. As Avallon President Sergey Vashchenko explains, it was also the most challenging.
"Since music is such an important part of the performance, figure skating competitions have some of the most stringent sound requirements," says Vashchenko. "Even after working with the building's designers to reduce the reverb time from 7.5 to 3.2 seconds, we still knew we need to create a system with great performance and tight pattern control, to keep the reflections under control."
The audience seating is covered by eight each Renkus-Heinz CEM61 and CEM62 high power CoEntrant mid-high modules, with eight CE-3TLO subs covering low frequency reinforcement. The systems are hung around a central Media-LCD display. Ten CT7M TRAP boxes provide music to the skaters on the ice.
"During the EASE acoustic modeling phase, we looked at a number of options, including more traditional line arrays," says Vashchenko. "But we were not happy with the difference in sound quality between the audience and the ice. Moreover, there was some concern that a line array might block the sightlines for some of the upper-level seating. The optimal solution was to mount all the speakers on the video screen frameworks, and the Renkus-Heinz CEM and CT series speakers offered coverage patterns that suited this arrangement very well."
Power and signal processing for the systems is covered by Dynacord DSA-series multichannel amplifiers and P64 matrix processors. Amps and DSP are located within the signage frameworks, to reduce cable runs and assure low impedance. Audio signal is fed via fiber from the Stage Tec Auratux 16-T2Z digital console. "We assembled the entire system within the framework while it was on the ground, which made things a bit easier," says Vashchenko.
Acoustical measurements were carried out by consultant Yury Indlin of ADI in Irkutsk. Vashchenko designed the system, with installation and commissioning by Avallon's Vladislav Azarov.
"During the competition, sound levels are limited to 85-87dB," says Vashchenko. "But during testing we were able to achieve levels of 103dB, with even coverage across the entire facility."
At the Arena Fischt, home of the Olympics Opening and Closing ceremonies, Avallon installed six Iconyx IC7-II mechanically steered array systems in the VIP lobby, as well as a pair of PNX-82 two-way Complex Conic loudspeakers in the Press Center. And the Training Centers for Hockey and Figure Skating are both outfitted with multiple TRX151 two-way systems.