The Eurovision Song Contest 2026 was a triumph for technical production company Agorà and Sennheiser, showcasing the power of Spectera wireless technology. This article delves into the behind-the-scenes magic, highlighting the challenges faced and the innovative solutions employed to create the best live sound experience in ESC history.
A Spectera Spectacle
Sennheiser's Spectera system was the star of the show, with its handheld transmitter samples making their debut at Vienna's Stadthalle. The technical application engineering team, led by Jonas Næsby and Volker Schmitt, ensured seamless performance with their wideband system and new workflows.
The Stadthalle itself was transformed into a spectacle, with ORF's creative vision and Agorà's expertise. The excitement was palpable, and the technical suppliers rose to the challenge, as Volker Schmitt noted, "The anticipation was constantly rising..." The goal was to create a technically ambitious production, showcasing the latest technology in video, lighting, and sound.
Behind the Scenes: The Sound Room
In the sound room, led by Head of Sound Gerhard Jansa, the technical crew, artists, and broadcasters worked tirelessly. The room handled mic audio, IEM audio, artist audio preparation, and audio distribution to OB vans. Failsafe operation was crucial, with two independent mixing desks and operators.
Six Spectera Base Stations were employed, with four active for audio and control data, one scanning the spectrum 24/7, and a sixth as a true spare. This setup ensured full coverage and reliability, as Volker Schmitt explained, "We started out with two Spectera DAD antennas..." The RF control centre provided real-time status updates using Spectera WebUI and the Sonoros app.
Simplifying Complexity: Spectera's Cable-Free Advantage
Jonas Næsby praised Spectera's simplicity in cabling the arena, using fibre runs and standard IT media converters. This approach maximised the performance of remote antennas, avoiding the compromises of RF-over-fibre systems.
Mic Rotation: A Swift Transition
With 42 seconds to change acts, the audio team managed mic and in-ear rotations efficiently. Six Spectera handhelds, six Spectera SEK bodypacks, and six bodypacks with headsets and in-ear monitors were used, ensuring a seamless transition.
Næsby highlighted the bidirectional Spectera bodypack with a cardioid Headmic 4, which performed exceptionally well in front of the PA and wind machines. The soon-to-be-released Neumann KK 105 A capsules were also used for handheld mics.
Redundancy and Reliability
The ESC demands near-perfect reliability, and Spectera delivered. The system's RF stability and multi-antenna capabilities provided confidence to the production team, as Næsby stated, "No other TV production builds in more redundancy..." The Spectera handheld SKM proved to be the ideal solution.
Overcoming Fading and Phasing Issues
Spectera's wideband technology addressed fading and phasing problems, a challenge faced at the ESC in Copenhagen in 2014. Sennheiser's developers, Jan Watermann and Sebastian Georgi, recalled the struggle with fading in metal-clad venues. They developed Spectera to eliminate fading notches and cancellations, ensuring perfect coverage.
Watermann also addressed phase issues and clock synchronisation, a common problem in digital systems. Spectera's TDMA technique and internal clock synchronisation eliminate phasing, as demonstrated by the developers.
A Full Circle Moment
Spectera's journey began at the ESC, and it returned to solve the very issues it was born to address. Sennheiser's WMAS developers were thrilled to see Spectera in action, having overcome fading and phasing challenges.
Næsby proudly highlighted Sennheiser's history with the ESC, from wireless in the 80s to digitisation in 2013 and now the cutting-edge Spectera system.
Conclusion: A Wireless Masterpiece
The ESC 2026 showcased the pinnacle of wireless technology, with Spectera delivering crystal-clear audio and flawless performance. The event's success was a testament to the hard work and innovation of Agorà, Sennheiser, and the technical crew, creating an unforgettable experience for artists and audiences.
