L-Acoustics has unveiled L1, the flagship of the L Series, and its companion cardioid subwoofer, CS1, which has been built on L-Acoustics Progressive Ultra-Dense Line Source (PULS) technology.
L1 has been deployed on Bruno Mars’ The Romantic tour with Clair Global, for Harry Styles Together Together tour with Solotech, and on Joker Xue’s world tour with MRT, as well as a debut at the Brit Awards in London with Britannia Row, a Clair Global company. CS1 delivered the low end on the main stages of Coachella Valley Music and Arts Festival with RAT Sound, and Ultra Music Festival with Unreal-Systems/AgorA.
L1 and CS1 also mark their first permanent installation at the Hollywood Bowl, deployed in a white architectural finish, and the venue where the company officially unveils the new technology, alongside the new L-Acoustics Source Intelligence audio processing platform at Keynote 2026.
Where previous large-format systems made incremental gains, L1 achieves a categorically higher concentration of transducers in an efficient form factor. Each enclosure integrates two 18-in low-cardioid (LC) transducers side-mounted for frontal energy and rear rejection, four front-facing 15-in low-frequency drivers, eight 8-in mid-frequency drivers, and six coaxial 4-in+2.5-in HF compression drivers. This HF coaxial configuration, new to the L Series, increases SPL and long-throw capabilities.
The result is a maximum SPL of 160 dB per enclosure, across a full bandwidth of 35 Hz to 20 kHz, yielding best-in-class SPL per size, per kilogram, and per square meter. The companion wide vertical coverage L1D element matches this transducer architecture with a progressive 60-degree vertical coverage pattern for nearfield zones, achieving 155 dB SPL.