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Switzerland’s La Pontaise updates with Nexo

Nexo, in partnership in partnership with AER and ZAP Audio, has installed GEO S12 line array modules in the 60-year-old stadium.

In the latest in its recent run of stadium installs, Nexo has outfitted the 15,700-capacity La Pontaise Olympic Stadium in Lausanne, Switzerland, with GEO S12 line array modules.

La Pontaise, built in the 1950s, needed to upgrade its 30-year-old sound system in time for the international Athletissima athletics meet in July and to comply with the requirements of the FC Lausanne-Sport football of club, which plays its home games at the ground.

Philippe Martin, from consultancy firm AER, designed a stadium system comprising two identical setups on either side of the pitch, linked by a fibre optic Dante network. Each of the two grandstands has been installed with four clusters spaced 20m apart.

Each cluster consists of five GEO S12 cabinets – four GEO S1230s and one GEO S1210, plus one RS15 sub running in cardio mode. The clusters are each driven by NXAMP4x4-powered TDControllers, eight in total, with Yamaha MTX5D audio matrices. The system was installed by local contractor Auditech, which designed special brackets to suspend the clusters, spreading the weight across the concrete roof.

According to Martin, intelligibility was his main criteria when it came to designing the system. Working with Pierre André Aebischer, from Nexo’s Swiss distributor, ZAP Audio, Martin designed the system in Nexo’s NS-1 design software, before carrying out extensive simulation in EASE 3D acoustic modelling software. “We managed to get smooth, even coverage throughout the stadium,” he says. “There are no differences in level – the dispersion is totally homogenous as you walk around the stands.”

Nexo recently installed a two-way GEO S12-T system at the in Anderlech, Belgium – home to Anderlecht FC – to replace the stadium’s 25-year-old PA/VA system.