The Outstanding XXLS400-DF Subwoofer 12" 400W 

Following on from the success of the XLS200 and because we have been asked many times for a more powerfull subwoofer but in a sealed enclosure, we have designed the XXLS400. The XXLS400 is an extremely high power yet compact subwoofer that can deliver very low bass at high volumes for the AV enthusiast, but with great timing and control for the Audiophile.

The design incorporates a 400W amplifier and the renowned XXLS400 drive unit in a 50 Litre enclosure, we have added some LRC to electronicaly adjust the system Q to 0.7 and add some gentle lift to help it plumb the depth. In fact these tweaks makes the system act like a subwoofer twice it's size


System Type: Active System with Variable Freq bass filter and 50 Litre Sealed Enclosure

Frequency Response at -3dB: In your front room -3dB lower than 20Hz !!!

Amplifier Input / Output Impedance: High Level 100K - Low Level 10K

Gain Control Range: 60dB

Drive Unit Impedance: 4 Ohm

Mains Input: 230V / 50Hz

Dimensions: 400D x 460H x 400W

Weight: 27.7kg



  • 2 years warranty
  • True 400W continuous discrete Bipolar amplifier
  • Truly hand built in Great Britain, when we claim hand built we mean hand built, as there are no SMD components or other automatic placement devices.
  • Downward Firing 300mm (12") Peerless XXLS12 long throw heavy duty and highly regarded drive unit
  • Continuously variable frequency control
  • Audiophile grade toroidal transformers
  • Gas Tight Neutrik connection for long term consistency of sound quality
  • Separate controls for high and low-level input adjustment
  • Simultaneous connection of high and low level sources
  • ASP automatic speaker protection audibly transparent driver protection
  • 4 x 16A output devices for effortless current control
  • Auto Switch On Function - Can be disabled via switch

  • IEC Power Socket

 Manual In PDF Format HERE

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XXLS400-DF Cherry

  • Brand: BK Electronic
  • Product Code: XXLS400-DF Cherry
  • Availability: Pre-Order
  • £655.14

  • Ex Tax: £545.95