‘Virtually a concert hall’: How Nexo transformed prestigious Paris arts institution Ecole du Louvre25 July 2017
Prestigious Paris arts institution Ecole du Louvre has been given a major audio overhaul, with Nexo’s SR systems rendering each of its lecture theatres “virtually a concert hall”, according to Astell Design consultant Rémy Bréan.
AV installation company Lagoona Lyon was chosen to renovate the audio speciifcation for the centre’s four amphitheatres, opting for a mix of Nexo and Yamaha elements to create a visually discrete system for the Ecole.
Astell Design, specialist in large-scale installations, was in overall charge of the renovation, with Bréan describing the aim of the project as being “to offer the latest technologies available in the world of live shows and events. As paradoxical as it may seem, our specifications have been based on the same requirements as the acoustic reinforcement for an artist’s live performance. Our aim was to broadcast as discreetly as was acoustically possible, giving our pupils a comfortable listening room, virtually a concert hall, to limit auditory fatigue over the duration of their teaching”.
The Lagoona team, led by managing director Frédéric Bezard, was tasked with designing a sound reinforcement system that would ‘guarantee excellent speech intelligibility at low volume, but which could also be beefed up with additional subwoofers for extra output’.
With the Ecole housed in one of the most famous buildings in the world, numerous challenges awaited the team, meaning modification of cable conduits and loudspeaker mounts was out of the question – new loudspeakers therefore had to replace the old ones. Lagoona selected two new compact enclosures from Nexo – the GEO M6 compact line array and the extra-compact ID24 point source modules were the perfect answer.
The four lecture theatres are Michelangelo (180 seats), Cézanne (160 seats), Goya (140 seats) and Dürer (113 seats). A variety of systems have been designed to suit the different spaces, using a total of 36x GEO M620 line array modules as the principal loudspeaker.
As paradoxical as it may seem, our specifications have been based on the same requirements as the acoustic reinforcement for an artist’s live performance.
In the main amphitheatre, the wood-panelled Michelangelo, Lagoona was tasked with delivering a system suitable for teaching and lecture classes, film screenings and musical entertainment. The primary system features 4x GEO M620 line array modules per side. An additional 4x M620s are positioned for the rear of the room to play the surround channel for 5.1 channel film projection, and 4x ID24 über-compact full-range speakers for front fill. Two LS600 subwoofers are placed in the corners, and additional LS18s can be brought in on dollies if necessary. In the rack is a combination of classic NXAMP4x1 and NEXO’s new DTDAMP with DTD controller.
In the Cézanne, which is 20 metres deep, the installation comprises 4x GEO M620 compact line array modules per side, with another 2x M620 cabinets for front fill. Jean Jacques Vias, Nexo sales manager for France, explained: “[With] a column of 12 modules operating in a reverberant environment, we would expect GEO M6 to cover 35-40 metres. Here the line of four cabinets couples to form a cylindrical wavefront. The output from four modules carries easily to the end of the Cézanne room.”
Having considered the room’s acoustics and spaces, two LS18 subs have been placed at the back of the stage.
Meanwhile, in the Goya, a vaulted room with stone walls and wooden acoustic treatment, the loudspeaker modules are, once again, GEO M620, three per side. Three ID24 modules are used for front fill, and another pair of IDs for monitoring. LS18 subs can be added if required and the whole room’s SR is run off a single NXAMP4x1 amplifier.
In the Dürer, another vaulted cellar, a similar system of 3x M620s per side has been installed, plus single M620s placed 2/3 of the way through the room to cover the last 8m of seating. Two ID24s cover frontfill, a pair of M620s provide monitoring, and the whole system is run off one NXAMP4x1.