HK Audio LSUB4000
HK Audio LSUB4000 ThumbnailHK Audio LSUB4000 Thumbnail
  • Overview
  • Specifications
  • Extended 5 Year Warranty Available Free

L SUB 4000 is the flexible new 18 inch subwoofer from HK Audio. 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 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, for example, 70 Hertz (optional frequency separation). Filter presets are available for Lab Gruppen IPD Amplifiers.


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 transport cover (TC 4000), TiltUnit
Dimensions (WxHxD) 91 x 51 x 81 cm
Weight 57.1 kg / 125.9 lbs


The standard warranty on HK Audio products is 1 year, however, their products are supplied with an extended warranty registration card. If this card is completed and returned then HK Audio will issue you with a certificate extending the warranty to 5 years, free of charge.
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