HK Audio LINEAR 9 118 Sub A 1x18" 1100W Bass Reflex Active Subwoofer, Black
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HK Audio LINEAR 9 118 Sub A 1x18" 1100W Bass Reflex Active Subwoofer, Black

SKU: HKLINEAR9SUB MFR: LINEAR-9-118-SUB-A-U
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Key Features

  • Experience powerful bass with this 18" HK Audio subwoofer for home theater setups.
  • Enjoy deep, rich sound with the LINEAR 9 118 Sub A's 1100W Class D power amplifier.
  • Optimize your audio with DSP CONTROL software, featuring a 10-band EQ and more!
  • Easily integrate this active subwoofer with balanced XLR inputs and thru outputs.
  • Achieve crystal-clear audio with a frequency response of 38 Hz - X-Over for home use.
  • Set up is a breeze, thanks to the subwoofer's lightweight design and manageable size.
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Special Order?Estimated to Ship: 08/17/2025
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HK Audio LINEAR 9 118 Sub A Specifications

  • Finish

    PU coating black

  • Housing

    Birch multiplex

  • Max. SPL @ 10 % THD

    129 dB half space (42 Hz - 100 Hz averaged)

  • Max. SPL Peak @ 10 % THD

    131 dB Halfspace

  • Frequency response +/-3 dB

    42 Hz - X-Over

  • Frequency response -10 dB

    38 Hz - X-Over

  • Power amp output (RMS)

    1100 W

  • Amp type

    Class D

  • LF driver

    1x 18", 4" voice coil

  • Maximum input level

    +20 dBu

  • Analog inputs

    2x XLR combo balanced

  • Analog thru

    2x XLR balanced

  • DSP Out

    1x XLR balanced

  • Network port

    Ethercon RJ45, 1x In, 1x Thru

  • Filter presets

    Front, Cardioid 1:1, Cardioid 2:1, Remote

  • Remote-software

    DSP CONTROL (Windows, macOS)

  • DSP functions

    Fully parametric 10-band EQ with variable filter characteristics, Low-Pass Filter, Polarity, Level, Delay, Limiter, Mute

  • Sample rate

    96 kHz

  • System latency

    Less than 2.6 ms

  • Mains connector

    1x Powercon NAC3 In, 1x Powercon NAC3 Thru, 100-240 V

  • Power consumption

    1.9 A / 100-240 V nominal according to EN 62368-1

  • Pole mount

    1x M20

  • Carrying handles

    2x MultiGrip

  • Front grille

    2m metal grille backed with black acoustic foam

  • Dimensions (W x H x D)

    21.65 x 22.04 x 27.17" (55 x 56 x 69cm)

  • Weight

    91.5 lbs (41.5kg)

  • UPC Code

    4039373023770

About HK Audio LINEAR 9 118 Sub A

The LINEAR 9 118 Sub A is a true powerhouse. Its bass-reflex construction allows for compact dimensions, and weighing in at just 42 kilograms, it is extremely easy to transport. A powerful punch, precise playback and impressive low frequency performance make this active bass the ideal complement to the mid/high units.

What's more, it meets all the requirements for quickly and easily implementing effective cardioid setups, both mechanically and with the available filter sets. Thanks to its stereo preamplifier, it is also ideal for use in 2.1 systems.

HK Audio LINEAR 9 118 Sub A Features

  • Active bass-reflex subwoofer with network control
  • 1x 18-inch bass speaker with 4-inch voice coil
  • DSP platform with fully parametric 10-band EQ, delay and limiting for uncompromised individual adjustment
  • Modern network technology for precise control of all DSP features
  • Additional DSP-Out with the full range of features for integration of non-network-compatible loudspeakers
  • Direct access to easily selectable presets on the subwoofer for Cardioid 1:1 and Cardioid 2:1
  • High-resolution AD/DA converters with 96 kHz and low latency of less than 2.6ms
  • M20 tripod thread for mounting mid/high units via tripod
  • Professional, lockable PowerCon and EtherCon connections
  • Sturdy enclosure made of birch multiplex with PU coating
  • Made in Germany

Warranty Information

This product has a limited warranty of 60 months for parts and 60 months for labor.

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Key Features

  • Experience powerful bass with this 18" HK Audio subwoofer for home theater setups.
  • Enjoy deep, rich sound with the LINEAR 9 118 Sub A's 1100W Class D power amplifier.
  • Optimize your audio with DSP CONTROL software, featuring a 10-band EQ and more!
  • Easily integrate this active subwoofer with balanced XLR inputs and thru outputs.
  • Achieve crystal-clear audio with a frequency response of 38 Hz - X-Over for home use.
  • Set up is a breeze, thanks to the subwoofer's lightweight design and manageable size.

What's in the box:

  • HK Audio LINEAR 9 118 Sub A 1x18" 1100W Bass Reflex Active Subwoofer (Black)
  • HK Audio 5 Year Limited Warranty