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 4000 A is capable of producing an absolutely enormous maximum SPL of up to 137dB. Perfect for large audiences, a Linear PA system is the perfect choice for both portable and installed setups.

Features

• 18'' subwoofer with 1200W of class-D power
• Rugged double vented bandpass enclosure crafted from birch multiplex
• Powerful low-end ranging from 30Hz to 100Hz
• Can serve as a sub-low add-on to the L SUB 2000 A to beef up the 30Hz - 70Hz range
• Capable of delivering a huge maximum SPL of up to 137dB (half space)
• Single 18'' woofer with a 4'' voice coil
• Eight integrated HK Audio MultiGrips
• The perfect addition to any Linear 5 mid/high units, particularly the Linear 5 LTS A loudspeakers

Specifications

• Maximum SPL: 135dB half space (at 10 percent THD)
  • Peak: 137dB half space (at 10 percent THD)
  • Calculated: 138dB half space
• Frequency Response:
  • +/-3dB: 39Hz - X-over
  • -10dB: 31Hz - 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'' (with advanced ventilated voice coil gap)
• Cut-Off Frequency Active: 70/100Hz 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: 2 x M20 (K&M)
• Handles: 8 x HK Audio MultiGrip
• Enclosure: Birch multiplex
• Grille: 2mm metal grille backed with black acoustic foam
• Finish: Acrylic enamel, black
• Dimensions: 910mm x 510mm x 810mm (W x H x D)
• Weight: 59kg / 130.1lbs