SINGAPORE: At Singapore’s School of the Arts (SOTA), where artistic excellence meets architectural distinction, the challenge of upgrading the Concert Hall audio system demanded a solution that could balance technical precision with acoustic sensitivity. Designed by WOHA and recognised with a World Architecture Festival award in 2010, the venue’s striking form presented a complex sonic environment; one that required careful engineering to deliver consistent intelligibility without compromising its natural acoustic character.

Tasked with the overhaul, L-Acoustics Certified Partner Concept Systems approached the project with a clear objective: to achieve uniform coverage across all 628 seats, accommodating everything from classical recitals to multimedia productions. However, beneath that objective lay a series of technical challenges, including highly reflective surfaces, strict rigging limitations, and unforeseen spatial constraints that emerged during installation—all of which had to be resolved within a tightly scheduled two-week execution window.

“The venue needed highly controlled coverage so that sound energy stayed focused on the audience and avoided exciting reflective surfaces unnecessarily,” explained James Pithouse, Senior Engineer (Product and Project) at Concept Systems. “The A10i with Panflex was the right fit precisely because of how finely we can tune its horizontal dispersion. We can shape the coverage to match audience geometry and cut spill to the walls before it becomes a problem.”

The reflective nature of the hall demanded exceptional control over directivity, while structural limitations imposed a strict 200kg load capacity for suspended loudspeaker arrays. This ruled out heavier configurations, making system efficiency and output-to-weight ratio critical considerations. The chosen L-Acoustics A Series solution addressed both challenges, enabling high-performance coverage within the venue’s physical constraints.

The final configuration comprises six A10i Focus and four A10i Wide elements deployed as left and right hangs, delivering full audience coverage while remaining within the rigging limits. Complementing the main system, five X6i loudspeakers provide front-fill, ensuring tonal consistency for listeners seated close to the stage.

A further complication arose during installation, when the originally specified vertical cardioid KS21i subwoofer arrangement proved unfeasible due to ceiling height restrictions. Rather than compromise low-frequency performance, Concept Systems re-engineered the deployment into a horizontal KS21i configuration, preserving cardioid behaviour while adapting to the venue’s spatial limitations.

“Soundvision was essential in anticipating the room’s behaviour before we arrived,” Pithouse noted. “That let us optimise speaker aiming and Panflex settings in advance, so we understood the reflection problems before final tuning. And when the subwoofer geometry needed to change, we had the simulation tools and the system flexibility to adapt quickly.”

L-Acoustics Soundvision played a central role throughout the design phase, enabling detailed modelling of loudspeaker placement, coverage patterns, and SPL distribution prior to installation. Supporting the system is a fully redundant Milan-AVB network infrastructure, with three LA4X amplified controllers providing amplification and an L-Acoustics P1 processor managing signal distribution. The P1 receives AES signals from the venue’s existing Yamaha I/O system, ensuring seamless integration without the need for additional conversion hardware.

Concept Systems completed the full scope, including de-rigging the previous system, installation, commissioning, network configuration, and optimisation, all within the constrained two-week timeline, aligning precisely with the venue’s performance schedule.

Early feedback from SOTA’s technical team highlights improved clarity, consistent coverage across all seating areas, and enhanced flexibility when transitioning between acoustic and amplified programming. Comprehensive training has also equipped venue operators with the tools to manage and optimise the system effectively over time.

“The initial response has been very positive,” Pithouse concluded. “The venue now has a system that genuinely handles what they put in front of it — and it’s built to grow with them.”

In a venue where architecture and acoustics are intrinsically linked, the SOTA Concert Hall upgrade stands as a clear example of how advanced system design and adaptive engineering can unlock performance potential—delivering precision sound in even the most challenging environments.