WLA-218SUB Big and bold

  • 2 x 18″ LF drivers
  • Dual chamber cabinet
  • Parallel and Discrete modes
  • 4.0″ voice coils
  • 18 mm Baltic Birch plywood construction
  • 1600 W Continuous (Parallel)
  • 3200 W Programme (Parallel)
  • 6400 W Peak (Parallel)
  • 138 dB Max SPL @ 1 meter

Using a dual chamber cabinet, the WLA-218SUB delivers huge bass in a versatile configuration.

2 x 18” Wharfedale Pro LF transducers with massive 4” voice coils produce up to 138 dB SPL – while their cast frame aluminium baskets reduce any risk of mechanical distortion.

The WLA-218SUB cabinet is constructed of 18mm birch plywood and all internal bracing is designed to avoid vibration or physical shape distortion during prolonged high volume use.

This massive subwoofer is designed for ground placement.


1600 watts (parallel)

4.0″ voice coils

18 mm Baltic Birch plywood construction

1600 W Continuous (Parallel)

3200 W Programme (Parallel)

6400 W Peak (Parallel)

138 dB Max SPL @ 1 meter

Dual Chamber

The two 18” Wharfedale Pro LF transducers with massive 4” voice coils work together to deliver up to 138 dB Max SPL.

Using cast frame aluminium baskets, any mechanical distortion is dramatically reduced ensuring smooth, accurate and honest reproduction.

Birch PLywood

WLA-218SUB is constructed of 18 mm thick Baltic birch plywood.

Not only does this create a solid and durable cabinet, but it also contributes to the overall sound and character.

WLA-218SUB is also covered in our most durable and hard wearing Rhino Rock paint finish. This ensures that it will always look as good as the day you unboxed it.

Parallel / discrete

Run the WLA-218SUB in Parallel or Discrete mode.
In Parallel mode both drivers are connected in parallel, resulting in a 4Ω subwoofer.
In Discrete mode both drivers operate individually and can respond to separate source material. In this configuration each driver is 8Ω.

SOlid as a rock

As with all Wharfedale Pro PA systems, years of expertise is behind a loudspeaker built to last, with thanks to our high standards of quality control.

The WLA-218SUB is coated in the highest quality Rhino Rock paint finish – a chip resistant texture with a professional, discrete aesthetic whilst being prepared for the rigours of life on the road.


A Versadrive DSP (such as SC-48 FIR) or a DP-N series amplifier with internal FIR filtering is highly recommended to get the most from the system.  Phase, EQ and filtering should be applied and this way, the physics of the system can be truly optimised – delivering that sub-bass ……directly into the faces of the audience!

Wheely practical

For easy transportation, WLA-218SUB is compatible with Wharfedale Pro optional caster wheels.

Up close

Rhino Rock
paint finish

Full steel
front grille

Custom 18"
Wharfedale Pro
drivers with
4.0" voice coils

4 Rubberised
carry handles

8 rubber feet

Dual chamber


Model NameWLA-218SUB
System TypePassive
Configuration2 x 18” Dual Chamber Sub
Frequency Response (+/-3 dB)30 Hz – 1.5 KHz
Frequency Range (-10 dB)30 Hz – 1.5 KHz
Sensitivity (2.83 v / 1 m)100 dB
Calculated Maximum SPL @1 m138 dB
System Rated ImpedanceParallel 4 Ω, Discrete 8 Ω x 2
Low Frequency Transducer
Size2 x 470 mm / 18”
Voice Coil Size 102 mm / 4”
Rated Impedance2 x 8 Ω
LF Power (re:AES2-2012)2 x 800 W
System Continuous Power1600 W Parallel / 800 W Discrete
System Programme Power3200 W Parallel /1600 W Discrete
System Peak Power6400 W Parallel /3200 W Discrete
Crossover frequency
Input Connector2 x speakON compatible
Enclosure Material18 mm Plywood
FinishRhino Rock black paint
Grille Material & FinishSteel
Dimensions – (Unpacked)
Height Front541 mm / 21.3″
Height Rear541 mm / 21.3″
Width1041 mm / 41”
Depth650 mm / 25.6”
Dimensions – (Packed)
Height626 mm / 25.6″
Width Front1126 mm / 44.3″
Width Rear1126 mm / 44.3″
Depth722 mm / 28.4″
Net Weight (kg / lbs)78.9 kg / 173.5 lbs
Gross Weight (kg / lbs)86.0 kg / 189.6 lbs