HK Audio L Sub 4000 A subwoofer

‌L SUB 4000 A – A LOW-END BOOST FOR THE LINEAR SERIES

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)

Specsifications:

• Max SPL: 135 dB half space (@ 10% THD)
  
• Max SPL peak: 137 dB half space (@ 10% THD)
  
• Max SPL calculated: 138 dB half space
  
• Frequency response +/- 3 dB: 39 Hz – X-Over
  
• Frequency response -10 dB: 31 Hz – X-Over
  
• Power Rating: 1200 W
  
• Amplifier: Class D
  
• Active protection circuits: Undervoltage Protection, Thermoprotection, Short Circuit Protection, Overcurrent Protection, Subsonic 24 dB/oct., Peak Limiter
  
• LF Speaker: 1x 18" featuring advanced ventilated voice coil gap
  
• Cut-off Frequency active: 70 Hz /100 Hz variable with 24 dB/oct.
  
• Connections: 2x XLR–1/4"-Combo In, 2x XLR Thru, 2x XLR Mid/High Out
  
• Input Sensitivity: +4 dBu @ Gain center-notched
  
• Pole mount: 2x M20 (K&M)
  
• Handles: 8x HK Audio MultiGrip
  
• 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, tilt unit
  
• Dimensions (WxHxD): 91 x 51 x 81 cm
  
• Weight: 59 kg

Package includes:

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