Monolith-DF Plus
 
 
 
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Designed And Manufactured In The UK
 
 
 
The New and Awesome Monolith Plus -DF + Subwoofer 500W RMS (1000W Peak) 12" Ported Reflex - £645.45
   
   

The New and Awesome Monolith Plus-DF Plus MK2  Subwoofer 500W RMS (1000W Peak) 12" Ported Reflex

The Monolith Plus MK2 Now with Auto-On and a new improved loudspeaker , A room shaking 20Hz / In room 15Hz 

Pre-Order now - Introductory Price £645.45

     
Introduction:- We are pleased to announce the introduction of the latest version of the Monolith Plus subwoofer. Now fitted with an extremely high quality 12" long throw loudspeaker that will improve the overall performance We have kept the specification as close as possible to the original loudspeaker so as not to lose the musical qualities but have beefed up the speaker to enhance its home cinema pedigree. One of the major upgrades was to reduce the power compression to the voice coil, the engine room of the subwoofer which now has a 3.5" Diameter voice coil and a larger vented pole piece enabling to easily handle whatever content is thrown at it
 

The Amplifier:- The new amplifier is the class A/B bipolar design as used in all our subwoofers, this means that the Monolith Plus now comes fitted as standard with the power saving auto / on function. The Monolith Plus still comes fitted with controls not found on any other subwoofer in this price range. Controls include volume adjustment for both high and low level inputs, a filter by-pass on the low level input, low pass frequency contour 40 to 120Hz and a continuous phase adjustment. With all these functions available to hand the Monolith Plus amplifier will allow the end user varied connection options and ease of fine tuning. This amplifier is built here at our UK factory and is rated at 500W RMS and 1000W RMS peak dynamic.

Amplifier

 

The Monolith Plus amplifier hand built by B.K. Electronics

 
 
The Cabinet:- Out of necessity the cabinet has to be large after all we are designing a high SPL and low distortion subwoofer. The cabinet has to be strong, rigid and not colour the sound. So, it's made from 18mm MDF and critically braced with a 25mm Baffle. The port has a 100mm internal diameter and is flared both ends to help eliminate port noise.
 

Drive Unit:- A 300mm / 12" twin magnet drive unit to increase linear excursion, a cast basket for a solid uncoloured projection of sound without ringing and vented pole piece to help reduce power compression.

Speaker

 
Specifications
 
System Type: 95 Litre reflex tuned to 20Hz, cabinet manufactured from veneered 25mm MDF and Critically braced
 
Distortion: 5% 102dB @ 20Hz
 
Frequency Response at -3dB: 20Hz / In Room at 15Hz
 
Amplifier Input / Output Impedance: High Level 100K - Low Level 10K - Balanced 10K
 
Gain Control Range: 80dB
 
Drive Unit Impedance: 4 Ohm
 
Mains Input: 230V / 50Hz
 
Dimensions: 420D X 604H x 540W
 
Weight: 48.0kg
 
Features
  • 2 Years Warranty
  • True 500W continuous discrete Mosfet 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")
  • 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
  • Auto / On Function
  • ASP automatic speaker protection audibly transparent driver protection
  • IEC Power Socket
  • Doubled flared port for reduced port noise
Adobe   Click here for the user manual
Optional Extra
HLL
To Order a 5, 10 or 15M High Level Lead Click HERE
 
International Orders
 

Due to Brexit the trading relationship between the UK and EU has changed for further information on how to place an order please contact us via email sales@bkelec.com

(c) 2025 BK Electronics - Unit 1 Comet Way, Southend-On-Sea, Essex SS2 6TR - Tel ; 01702 527572 email sales@bkelec.com

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