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L-Acoustics L2D arrays solve 40-metre coverage challenge at Baluarte Congress Palace
The 1,600-seat main auditorium of Pamplona, Spain’s Teatro Baluarte presented a classic audio challenge: achieving consistent coverage across forty metres of depth without delay systems, while accommodating programming that ranges from classical orchestras to contemporary rock concerts. The venue’s reverberant acoustics and requirement for clean stage presentation - essential for flamenco and classical performances - demanded a solution that could deliver professional touring-grade audio within strict aesthetic constraints.
Baluarte Congress Palace, adjacent to Pamplona’s 16th-century Citadel, serves as Navarra’s primary cultural venue with 63,000 square metres of conference and performance space. The main auditorium’s acoustic properties and diverse programming schedule - from Madrid pop-rock band Morgan to violinist Ara Malikian - required a system capable of handling vastly different sonic requirements while maintaining intelligibility throughout the space. Earpro, the L-Acoustics distribution partner in Spain, worked with the L-Acoustics Application team to design a solution centred on L2D line arrays. The integration was carried out by Telesonic, a Spanish company that designs and integrates audiovisual installations.
The system’s integrated cardioid technology proved essential for controlling acoustics in the reverberant space, while the compact form factor met the venue’s stage aesthetic requirements. The venue’s previous positive experiences with L-Acoustics rental systems, including Kara II, established familiarity with the brand’s capabilities. However, the L2D selection was driven by additional criteria beyond sonic performance. As part of Baluarte’s Strategic Project 23-30, with its focus on digitalisation and sustainability pillars, the venue prioritised environmentally responsible technology alongside audio excellence.
“The installation of the L2D also represents an important step forward in our environmental commitment, as we are talking about an extraordinarily efficient and environmentally friendly system”, states Eduardo Nanclares, Director of Sustainability and Quality at Nicdo and Head of Operations at Baluarte. The L-Series’ sustainable design credentials - requiring thirty percent less wood and sixty percent less steel, using fifty-six percent less paint, and being twenty-five percent lighter than comparable systems - aligned with the venue’s green design philosophy. An on-site demonstration confirmed that the L2D configuration could deliver professional-grade coverage while meeting budget parameters, spatial constraints and sustainability objectives.
Digital acoustic modelling through Soundvision software addressed the project’s primary technical obstacles: achieving consistent SPL across the venue’s 40-metre depth without delay systems; balancing direct sound projection with room reflection management in the highly reverberant space; and maintaining adequate sound levels to back seating areas while preserving sight lines and blending into the architecture. Multiple configurations were analysed before the final L2D solution proved optimal for the venue’s specific acoustic and operational requirements.
The main system comprises L/R arrays of one L2D per side, configured in supercardioid mode to maximise on-stage rejection, with Panflex angles set to 90-degrees, angled inward to minimise side wall reflections. Low-frequency reinforcement comes from a centre-hung array of six KS21 subwoofers arranged in two hangs of three units each in a cardioid configuration. These can be reconfigured as left-right subwoofer stacks for specific concert requirements.
Four X8 across the stage lip serve as front-fill, while four X12 are ground-stacked at stage left and right for in-fill. The entire system operates over Milan-AVB, with a P1 processor managing the network connection between front-of-house consoles and the LA7.16i amplified controllers housed in the venue’s rack room.
(Photo: EarPro/L-Acoustics/Teatro Baluarte)
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