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Long throw large format line source

  • Exceptional SPL, LF and throw capability for stadium and outdoor festivals
  • K transducer configuration for smooth horizontal radiation pattern
  • State of the art rigging system for laser-like accuracy and quick set-up
  • Dedicated LA-RAK touring system package
  • New preset library for “out of the box” results and easy tuning

Variable Curvature Line Source


With the proprietary DOSC waveguide, the L-Acoustics V-DOSC system was the first line array to operate coherently across the whole audible frequency range. Since 1993, this major technological innovation is at the heart of every L-Acoustics line source element, with specifically tailored DOSC waveguides for constant curvature arrays (ARCS systems) or variable curvature arrays (K systems).

Laminar Venting

All current L-Acoustics loudspeaker enclosures with low-range capacities feature laminar vents which provide high SPL while eliminating turbulence noise. This technology was implemented for the first time in 2007 in the SB28 subwoofer, and has been included in K1, K1-SB, K2, SB15m, SB18(i/m), and the X Series.


Introduced in 2008 with the KI system, the L-Fin waveguide marked the transition from the "V" transducer layout of legacy V-DOSC and dV-DOSC systems to the "K" transducer layout. L-Fins significantly improve the precision and smoothness of the directivity pattern in the horizontal plane. In addition to K1, L-Fins are featured in Kara and ARCS WiFo.

K1 / K1-SB


K1 is the benchmark for sound at global stadium tours and the world’s most renowned outdoor festivals. K1 has no equal in SPL per meter and, coupled with the K1-SB, offers an unprecedented level of directivity control, making it the leader for solving noise pollution and throw issues in outdoor settings. With proprietary, state-of-the-art rigging, the K1 is the go-to choice for precise deployment and lightning fast load-in and load-out.

Top productions demand K1 and can rely on the L-Acoustics Rental Network to deliver the pristine and impactful sound signature of K1 to their audiences the world over.

“I truly believe that K1 is the best large-scale stadium sound system on the planet right now. I also know that most, if not all, of the world-class engineers that have mixed on it agree with me. The overall response from literally every engineer at Coachella and Stagecoach was ‘wow!’ K1’s volume, impact and low frequency control are truly distinct.”

Dave Rat,
President of Rat Sound Systems, Inc.

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