L-Acoustics has unveiled one of its most ambitious technology launches to date, introducing the new L1 large-format line array system, the companion CS1 cardioid subwoofer, and the proprietary Source Intelligence voice-separation platform — a trio of innovations that collectively signal a major shift in how large-scale live sound reinforcement may evolve across stadiums, festivals, touring productions and immersive performance environments.

Officially launched during L-Acoustics Keynote 2026 at the Hollywood Bowl — where the technologies also marked their first permanent deployment in a custom white architectural finish — the announcement positions the company firmly at the forefront of both large-format sound system engineering and real-time AI-assisted audio processing. The keynote performance featured The War on Drugs, offering attendees a first-hand demonstration of the technologies in a live environment.

At the centre of the launch is the new L-Acoustics L1, the flagship model within the L Series platform and the company’s most advanced expression yet of its patented Progressive Ultra-Dense Line Source (PULS) technology. Already deployed across several major global tours and festival stages during its pilot phase, the system has been trusted on productions including Bruno Mars’ North American tour with Clair Global, Harry Styles’ Together tour with Solotech, and Joker Xue’ world tour with MRT, alongside high-profile appearances at the Brit Awards in London and major festival stages including Coachella and Ultra Music Festival.

Where conventional large-format systems have traditionally relied on larger quantities of array elements to achieve scale and output, L1 dramatically increases transducer density within a more efficient physical footprint. Each enclosure integrates two 18-inch low-cardioid transducers, four front-facing 15-inch low-frequency drivers, eight 8-inch mid-frequency drivers, and six coaxial 4-inch plus 2.5-inch high-frequency compression drivers. The resulting system achieves a maximum SPL of 160 dB per enclosure across a bandwidth spanning 35 Hz to 20 kHz.

“L1 represents the highest expression of power, bandwidth, and pattern control ever achieved in line array technology,” said Germain Simon, Director of Product Management, Loudspeakers at L-Acoustics. “With PULS taken to its ultimate expression, we have broken every performance benchmark we set for large-format line source. L1 is a genuine turning point for the industry.”

Supporting the system is the new L-Acoustics CS1, featuring four 21-inch transducers configured in a cardioid topology capable of delivering peak SPL up to 150 dB while extending low-frequency performance down to 25 Hz. The combination of L1 and CS1 places significant emphasis on low-frequency directivity and environmental control — an increasingly critical requirement for large productions operating within urban environments, multi-stage festivals and noise-sensitive venues.

The side-mounted low-cardioid transducers within L1 deliver up to 18 dB of rear rejection between 20 Hz and 250 Hz, while rejection below 80 Hz exceeds 26 dB. Engineers can select between cardioid and supercardioid operating modes depending on the acoustic demands of the environment.

L-Acoustics has further expanded this capability through its next-generation Autofilter algorithm integrated within Soundvision software. The platform shapes low-frequency beam control in three dimensions without introducing additional latency, enabling a shorter L1 array to achieve low-frequency behaviour comparable to — and in some configurations surpassing — substantially larger conventional systems.

For touring applications, the company claims major gains in deployment efficiency and logistics. A system configuration comprising two CS1 subwoofers, four L1 enclosures and one L1D element reportedly delivers equivalent acoustic performance to a traditional 21-box K1 configuration while requiring 66 percent fewer rigging actions, fewer cables and a significantly smaller footprint. Weight reductions are equally notable, with five enclosures reportedly performing the work of fifteen conventional boxes while reducing total rigged weight by approximately 20 percent.

The new architecture also introduces auto-locking rigging systems without external pins, simplified SC32 cabling, and dedicated LA7.16 amplified controllers delivering sixteen discrete DSP and amplification channels per enclosure. Combined with Milan-AVB networking and LA-RAK III touring racks, the ecosystem is designed to streamline both deployment and control at scale.

“This system makes a stadium sound a lot smaller than it is. Controlling the low end with a full cardioid PA pretty much eliminates the usual stuff rolling around these giant spaces. Once you add the finest mids and highs I’ve ever heard, the room just disappears,” said Sean “Sully” Sullivan, Sound Engineer for Bruno Mars.

“Mixing on L1 feels like driving a top-tier supercar. It’s unbelievably responsive and powerful, giving me the freedom to push the mix further than ever,” added Jun Zhang, Sound Engineer for Joker Xue. “Even when I pushed it to the limit, the vocals stayed silky and clear, with none of the harshness I’ve heard with other systems. And that gives me so much more confidence in my mix.”

Alongside the loudspeaker launch, L-Acoustics also introduced L-Acoustics Source Intelligence, a machine learning-driven voice-separation technology designed to dramatically improve vocal intelligibility and gain-before-feedback performance in live environments.

Running exclusively on the L-ISA Processor II platform, Source Intelligence continuously identifies and isolates vocal content within a microphone signal while removing unwanted stage bleed, PA spill, room reverberation and ambient noise in real time. Unlike traditional feedback management approaches that rely on notch filters, expanders or restrictive staging practices, the system operates transparently within the signal chain while preserving the natural tonal character of the source.

“For decades, engineers have been solving the PA bleed and feedback problem with compromises like notch filters that color the sound, expanders that can be unpredictable, or staging layouts that pull performers away from the audience,” explained Ryan John, Director of Product Management, Software at L-Acoustics. “Source Intelligence removes that trade-off entirely. The machine is continuously listening and continuously working, so the engineer can focus on the mix instead of fighting feedback, and the performer can own the whole stage.”

According to L-Acoustics, blind listening tests consistently ranked Source Intelligence highest for voice quality against competing approaches, with the technology capable of removing up to 40 dB of non-voice signal content. The platform has already seen deployment across major touring productions, Broadway shows and large-scale house-of-worship environments since Spring 2025, including tours for Benson Boone and Rosalía, as well as the Broadway production Dog Day Afternoon.

“Source Intelligence gives me a vocal sound like no other. It’s basically studio quality vocals now, which changes the game completely,” said Joey Diehl, FOH engineer for Benson Boone.

“I’m very impressed with how much headroom it gives me. I was able to get crisp, clean vocals in any scenario — including very loud stage environments and actors in front of the PA,” added Tony Award-winning Sound Designer Cody Spencer.

Designed for touring, theatre, corporate and house-of-worship applications alike, Source Intelligence supports handheld, headset, lapel and distant-pickup microphones, processing up to four simultaneous channels with end-to-end latency remaining below 8.5 milliseconds over MADI.

Together, L1, CS1 and Source Intelligence underline a broader strategic direction for L-Acoustics — one where loudspeaker design, immersive processing, machine learning and system-wide workflow integration increasingly converge into a unified ecosystem aimed at redefining both the technical and creative possibilities of large-scale live sound reinforcement.