L-Acoustics Introduces the L1

For the modern concert industry, simply increasing system volume is no longer enough. Stadium shows are becoming more complex: demands for coverage accuracy, rigging speed, directivity control, and integration of sound with stage lighting, screens, and rigging structures are increasing. The L1 was designed specifically to meet these challenges. 

PULS and the New Sound Energy Density

Unlike traditional large-format systems, where loudness increased by enlarging cabinet size, the L1 provides a fundamentally new level of transducer arrangement in a compact and efficient enclosure.

Each L1 cabinet houses four types of components:

• Two side-mounted 18” low-frequency drivers to create cardioid directivity and suppress rear sound; 

• Four front-facing 15” low-frequency drivers; 

• Eight 8” mid-frequency drivers; 

• Six coaxial high-frequency drivers (4” + 2.5”). 

The coaxial configuration of the high-frequency section, applied for the first time in the L Series, increases sound pressure level and effective coverage distance.

As a result, a single L1 element delivers a maximum SPL of up to 160 dB across the full operating frequency range from 35 Hz to 20 kHz. In terms of SPL relative to cabinet size and weight, L1 sets a new standard of efficiency for systems in its class.

For near-field coverage, the L1D element with wide vertical directivity was developed: it uses a similar transducer architecture but forms a progressive 60° vertical coverage angle and reaches SPL up to 155 dB.

The patented cardioid architecture of the L1D is realized via the side-mounted 18” LF drivers: they focus sound energy on the audience and minimize its spread behind the array. This provides up to 18 dB of rear rejection in the 20–250 Hz range and more than 26 dB below 80 Hz. Depending on the task, the cardioid mode can be selected for maximum rear energy suppression, or the supercardioid mode for lateral energy control.

"The announcement of the new L-Acoustics flagship is far more than a product launch. The company has once again raised the bar for quality and capability in the concert industry," comments Danila Khavtorin, Sales & Development Manager for L-Acoustics, Sound Creations.

A New Approach to the Cardioid Subwoofer

The CS1 is built with four 21” low-frequency drivers in a cardioid topology. The subwoofer delivers peak SPL up to 150 dB and extends the system’s low-frequency range down to 25 Hz. This ensures consistent, dense, and controlled low-end coverage for large concert venues, festivals, and stadiums.

New Touring Rigging Logic

When designing the L1 and CS1, the approach to system rigging was revised to increase convenience and speed in touring scenarios. The new suspension system does not use external pins, reducing assembly time and the number of rigging operations. For touring equipment, this is critical: saving time, weight, cables, and stage space directly impacts cost and setup speed.

A configuration of two CS1s, four L1s, and one L1D can provide the acoustic performance of a standard 21-element K1 rig while requiring 66% fewer rigging operations, fewer cables, and less physical space.

Weight differences are also significant: five elements perform the work of fifteen and weigh 20% less when rigged. For example, a main rig of four L1s and one L1D weighs 1,263 kg, whereas a comparable K1 system would require 15 elements totaling 1,590 kg.

What FOH Engineers Say About L-Acoustics L1

The L-Acoustics L1 has received enthusiastic feedback from top FOH engineers.

"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,” notes Sean Sullivan, FOH 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,” says Jun Zhang, FOH engineer for Joker Xue. "Even at full load, vocals remain smooth and clear without the harshness I’ve experienced on other systems. It gives me much more confidence in my work.

For engineers, rental companies, and technical professionals, L1 is more than a new sound system. It represents a shift in the very approach to designing and operating stadium sound, where performance, control, and workflow speed become part of a unified engineering concept.