Home to FC Zürich and Weltklasse Zürich – one of the most renowned one-day events in athletics – since its construction in 1925, Zürich’s 30,930-capacity Stadion Letzigrund reinvented itself in the summer of 2007 with an improved capacity for football, athletics and music concerts., It has since hosted European Championships, concerts by major artists and several big games for the Swiss Football League. To continue its legacy, Letzigrund upgraded its sound system with Renkus-Heinz.
Collaborating on the project as integrator was avidec AG along with audio consultant promedias. The events programme at the stadium changes regularly, so the system had to be weather-resistant and flexible enough to cater for speech, music and public announcements. Consistent and balanced SPLs were important, as was even coverage. Renkus-Heinz’s C Series and T Seriesloudspeakers in the WR weather-resistant versions delivered what Letzigrund was looking for.
‘Renkus-Heinz has a large range of loudspeaker systems, which meant that we were able to find the perfect solution for this project,’ says Chris Steiger, CEO and founder of promedias. ‘We originally installed 48 CX61 models in 2022 as close-field loudspeakers for the audience in the back rows. This year, we expanded the system further, replacing the original loudspeakers that were installed in 2007 when the stadium reopened with over 30 TX151s. This enabled us to deliver homogenous sound for all events.’
avidec installed 31 TX151 units on the stadium roof to deliver sound to the audience. Two loudspeakers are mounted in each front field, with one loudspeaker directed at the athletics track and the second at the front row of spectators. In the rear field, one TX151 loudspeaker provides sound for the audience at the back, and the rear three rows of seats benefit from sound provided by the additional, smaller CX61s. ‘Renkus-Heinz’s T Series loudspeakers are versatile enclosures that can be integrated almost anywhere,’ Steiger says. ‘The models are ideal for sports venue projects, delivering outstanding sonic performance to every area of the Letzigrund.’
The C Series comprises two-way compact loudspeakers built upon Renkus-Heinz’s design philosophy of innovation, sound quality and user-friendliness. Featuring the same complex conic horn technology of the T Series, the CX61 models deliver high-volume output in a small enclosure, as well as low distortion and high-frequency performance power.
‘avidec has been supporting the system since it was installed in 2007, therefore for more than 17 years,’ Steiger observes. ‘The experienced technicians at avidec AG chose Renkus-Heinz’s T Series and C Series models because of their excellent dispersion angles, high SPL and weatherproof housing. These models fit perfectly into the existing infrastructure. With this first conversion, we have now installed new sound in 40 per cent of the spectator stands. We plan on integrating more TX151s next year for the middle-row and back-row seats and the field. That’s how much confidence we have in these loudspeakers.’
More: www.renkus-heinz.com
