HK Audio L Sub 4000 subwoofer

€2,168.44 €1,777.41 €2,357.00

-188,56€You save 8%

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‌L SUB 4000 is a powerful 18” double vented bandpass subwoofer. Compatible with all LINEAR 5 fullrange speakers and mid/high units, its powerful low end – ranging from 30 to 100 Hertz – is totally and powerfully impressive. L SUB 4000 A can also serve as a sub-low add-on to LINEAR SUB 2000 to beef up the bottom end when required (optional frequency separation). Filter presets are available for Lab.gruppen IPD and PLM 12K44 controllers.

  • Powerful and versatile 18” subwoofer
  • Rugged wooden enclosure of birch multiplex: 15/18 mm, 9/13 ply
  • Power handling program: 2400 W
  • 31Hz – X-Over
  • 137 dB half space
  • 1 x 18” speaker with 4” voice coil
  • Compatible with all LINEAR 5 fullrange speakers and mid/high units

Ideal add-on for setups using LINEAR 5 LTS A

  • Sub-low add-on to LINEAR SUB 2000
  • Filter presets available for Lab.gruppen IPD and PLM 12K44 controllers
  • Made in Germany


  • Power-handling nominal (RMS): 1200 W
  • Power-handling, program: 2400 W
  • Power-handling, peak: 4800 W
  • Nominal impedance: 4 ohms
  • Max SPL 135 dB half space (@ 10% THD)
  • Max SPL peak: 137 dB half space (@ 10% THD)
  • Sensitivity 1W/1m: 106 dB half space
  • Frequency response +/- 3 dB: 39 Hz - X-over
  • Frequency response -10 dB: 31 Hz - X-over
  • LF Speaker: 1x 18" (4 ohms) with 2.5" voice coil featuring advanced ventilated voice coil gap (Neodymium)
  • Crossover frequency: 100 Hz, active X-over with controller amp (can be set lower when used as a sub-low)
  • Connections: 2x Speakon NL4, pin assignment switchable between 1+/1- and 2+/2-
  • Pole mount: 2x M20
  • Handles 8, integrated
  • Casters optional 100 mm
  • Enclosure: Birch multiplex
  • Grille: 2 mm metal grille backed with black acoustic foam
  • Finish: Acrylic enamel, black
  • Optional accessories: Protective cover, M20 Distance Pole Add-On, 100 mm casters, Wheelboard, TiltUnit
  • Dimensions (WxHxD): 91 x 51 x 81 cm
  • Weight: 57.1 kg

Package includes:

  • HK Audio L Sub 4000 subwoofer x1
  • Power cord x1

Ask from Sales Specialist for more information about this product

Andreas Reinula

+372 6728 280

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