HK audio Linear 9

The Beast!


The new LINEAR 9 series

The new series of LINEAR 9 loudspeaker systems brings together the latest in audio technology and the evolved needs of professional audio companies. These user requirements are reflected in every detail of the new LINEAR 9 family: high-grade speaker components, custom-designed acoustic transformers and horns, birch multiplex enclosures with PU coating, latest generation class-D power amps, high-performance digital controllers, advanced networkability, professional PowerCon adaptors and the manufacturing in St. Wendel (Germany) sum up to an extraordinarily efficient and value-preserving alternative in its class.

The flagship model of the new LINEAR 9 family is the 210 LTA, a fully integrated and scalable constant curvature point source speaker with exceptional long throw abilities. Based on the proprietary HK AUDIO transformer design method, the Multicell Transformer provides an accurate 60° x 25° sound dispersion above 1.35 kHz and can easily be rotated by 90°. The LINEAR 9 210 LTA delivers stunning results when used individually for pinpoint coverage of even distant areas or as a horizontal cluster in large venues, tents or open-air events. The 210 LTA also offers various options for groundstacking and rigging.

Equipped with the same DSP controller as the 210 LTA, the LINEAR 9 110 XA and 112 XA models are remarkably compact multi-functional loudspeakers designed to serve perfectly the daily changing requirements of professional sound companies: as low-profile stage monitors, as a small FOH solution on a tripod, as front fills, flown in a rig or as mid-high units in combination with subwoofers.

The LINEAR 9 family is completed by two high-profile subwoofers, each providing a highly effective but easy-to-use cardioid functionality. The 118 Sub A combines a well-defined bass foundation with the utmost compactness and transportability. Its bigger brother, the 118 Sub BA, features a band-pass design for an extended bass range and a higher SPL. The two subwoofers are tuned so that they can be used together without any problems.

All LINEAR 9 loudspeakers share the same type of digital controller. It provides a catalogue of remote control functions such as grouping, volume control, 10-band EQ, Limiter, Delay and full networkability (Controller software available for MacOS and Windows). The ‘DSP-OUT’ on every LINEAR 9 model is an exclusive feature enabling loudspeakers without built-in controllers, such as the LINEAR 5 series, to be fully integrated in a LINEAR 9 network.


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L9 210 LTA

Extraordinarily efficient, this constant-curvature, point-source speaker delivers first-rate performance in horizontal clusters. Deployed as a standalone unit, it covers its designated audience area with spot-on directivity. The newly developed Multicell Transformer (MCT) brings the benefits of exceptionally low distortion and precise directivity to a more compact housing. With the MCT on board, the 210 LTA delivers pristine audio even at extreme SPL. It can handle scenarios that otherwise require a line array, and it rises to acoustic challenges beyond the capabilities of conventional point sources or arrays.

Facts & Features

  • Constant-curvature, point-source speaker for clusters and standalone use cases
  • 60° x 25° Multicell Transformer, rotatable by 90°
  • 2 x 10″ bass/ midrange speaker
  • 4″ premium HF driver with a 2.5″ voice coil
  • 72 dB FIR-crossover, 1.35 kHz cutoff
  • DSP controller on board for remote management and network connectivity
  • DSP Out to connect conventional speakers to the network
  • Windows und macOS DSP CONTROL software
  • Overall output power: 1000 watts peak (Class-D, biamped)
  • Frequency response: +/- 3 dB: 88 Hz – 19 kHz
  • 142 dB max. SPL peak (half-space)
  • PowerCon mains port and PowerCon Link power outlet
  • PU-coated birch-multiplex enclosure
  • Factory presets for typical use cases plus user-programmable presets
  • Made in Germany
  • Five-year manufacturer’s warranty (upon registration)



Equipped with a larger housing, this bandpass box packs a mightier and deeper-ranging punch that travels further to cover longer throw ranges. Complying with stricter regulations that limit sound pressure levels is easy with the convenient cardioid option. With frequency and phase response tuned to match the more compact LINEAR 9 110 Sub A, it pairs up well for both to deliver outstanding performance.

Facts & Features

  • Band-pass subwoofer
  • 18″ woofer with a 4″ voice coil
  • DSP controller on board for remote management and network connectivity
  • DSP Out to connect conventional speakers to the network
  • Factory presets for typical use cases plus user-programmable presets
  • DSP CONTROL Software available for Windows und macOS
  • Overall output power: 1100 watts peak (class-D)
  • Frequency response: +/- 3 dB: 38 Hz – x-over
  • 136 dB max. SPL peak (half-space)
  • PowerCon power connector and PowerCon link power outlet
  • PU-coated birch-multiplex enclosure
  • Made in Germany
  • Five-year manufacturer’s warranty (upon registration)


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