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HK Audio Linear L SUB 1800 A 18'' Active Subwoofer

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Product Description

Full Description

The Linear Subwoofer - power, precision, and punch

The perfect complement to any Linear system. Linear Subwoofers boast a range of professional features to provide crisp, dynamic bass for both the Linear 3 and Linear 5 series of mid/high loudspeakers. Each of the Linear Subwoofers can be configured in a half-stack, full-stack, 2.1 configuration, or mono sub cluster.


HK's powerful Linear series delivers incredible high-definition audio gig after gig. High-performance amplification combined with precision designs and architecture give you the best possible sound from your system. Blow your audience away every single night with the power and definition of a Linear series PA system.



High-SPL design for any situation

Power isn't everything, but it definitely helps. Combining HK's incredible 1200W class-D power amp design with excellent sensitivity, the L SUB 1800 A is capable of producing a maximum SPL of up to 132dB. Perfect for large audiences, a Linear PA system is the perfect choice for both portable and installed setups.



  • 18'' bass reflex subwoofer with 1200W of class-D power
  • Precision playback with impressive low-frequency reproduction down to 38Hz
  • 132dB maximum SPL peak at 10 percent THD (half space)
  • High-volume design with an extended low-end
  • Rugged wooden enclosure
  • Adjustable X-over frequency
  • Integrated HK Audio MultiGrips
  • The perfect addition to any Linear 3 or Linear 5 mid/high units
  • Also ideal for use with the Elements Big Base systems


  • Maximum SPL: 130dB half space (at 10 percent THD)
    • Peak: 132dB half space (at 10 percent THD)
    • Calculated: 133dB half space
  • Frequency Response:
    • +/-3dB: 42Hz - X-over
    • -10dB: 38Hz - X-over
  • Power Rating: 1200W
  • Amplifier: Class-D
  • Active Protection Circuits:
    • Under-voltage
    • Thermal
    • Short circuit
    • Over-current
    • Subsonic filter, 24dB/oct
    • Peak limiter
  • Low-Frequency Speaker: 1 x 18''
  • Cut-Off Frequency Active: 100/120Hz variable with 24dB/oct
  • Connections:
    • 2 x XLR combo inputs (balanced)
    • 2 x XLR thru (balanced)
    • 2 x XLR mid/high out
  • Input Sensitivity: +4dBu at gain centre-notched
  • Pole Mount: 1 x M20 (K&M)
  • Handles: 4 x HK Audio MultiGrip
  • Enclosure: 16mm MDF
  • Grille: 2mm metal grille backed with black acoustic foam
  • Finish: Acrylic enamel, black
  • Dimensions: 510mm x 670mm x 720mm (W x H x D)
  • Weight: 42kg / 92.6lbs

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