L SUB 4000 A

L SUB 4000 A is a flexible 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 in the range of 30 to 70 Hertz.

  • Powerful and versatile 18" subwoofer
  • Rugged wooden enclosure of birch multiplex: 15/18 mm, 9/13 ply
  • 1200 W
  • 31 Hz – X-Over
  • 137 dB half space
  • 1 x 18" 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 (A)
L SUB 4000 A
Max SPL135 dB half space (@ 10% THD)
Max SPL peak137 dB half space (@ 10% THD)
Max SPL calculated138 dB half space
Frequency response +/- 3 dB39 Hz – X-Over
Frequency response -10 dB31 Hz – X-Over
Power Rating1200 W
AmplifierClass D
Active protection circuitsUndervoltage Protection, Thermoprotection, Short Circuit Protection, Overcurrent Protection, Subsonic 24 dB/oct., Peak Limiter
LF Speaker1x 18" featuring advanced ventilated voice coil gap
Cut-off Frequency active70 Hz /100 Hz variable with 24 dB/oct.
Connections2x XLR–1/4"-Combo In, 2x XLR Thru, 2x XLR Mid/High Out
Input Sensitivity+4 dBu @ Gain center-notched
Pole mount2x M20 (K&M)
Handles8x HK Audio MultiGrip
EnclosureBirch multiplex
Grille2 mm metal grille backed with black acoustic foam
FinishAcrylic enamel, black
Optional accessoriesProtective cover, M20 Distance Pole Add-On, 100 mm casters, tilt unit
Dimensions (WxHxD)91 x 51 x 81 cm
Weight59 kg/130.1 lbs
(Set of 2 x DFP)

Double flange plate. For attaching two distance poles with M20 threads to one subwoofer. Delivers acoustically correct, horizontal clusters of L5 LTS units in stacking setups.

Stereo Pole Add-on M20

The add-on set consists of two height-adjustable König & Meyer M20 distance poles, two high-quality XLR or Speakon cables and a carry bag.

Tilt Unit

The tilt unit permits perfect satellite-to-audience alignment and tilt protection using a full stack system.


Padded covers are available as optional accessories for all Linear SUB models.

WB-4 Wheel Board

Professional wheel board for L SUB 4000 (A). Four 100 mm casters (two with braking mechanisms), two integrated handles.

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