Dual 8" power array


  • Dual 8″ LF drivers
  • 3.2″  HF compression driver
  • 132 dB Max SPL @ 1 meter
  • Birch plywood construction
  • Integral, side plate adjustable rigging
  • Passive and Bi-amp mode switching


  • 15” high powered woofer
  • 700 Watts AES (RMS) / 1400 Watts PRG / 2800 Watts Peak
  • 35 Hz – 1.3 KHz Frequency Response
  • 133 dB Max SPL


  • DUAL 15” high powered woofer
  • 1200 Watts AES (RMS) / 2400 Watts PRG / 4800 Watts Peak
  • 39 Hz – 1.5 KHz Frequency Response
  • 145 dB Max SPL

Compact performance
The WLA-28 has been developed to condense the extreme SPL and long-throw capabilities of the WLA-12 in to an all- new 2 x 8” configuration. The smaller configuration is no-less of a speaker, in fact the smaller configuration is what makes it so versatile – with the ability to dismantle your stack into smaller units, the compact addition to the WLA series is perfectly suited for rental companies and for many other portable PA applications where high power and high sound pressure in an array formation are essential. Of course, this is also well suited to fixed installation including theatres and concert halls.
Huge power potential
The WLA-28 uses a pair of high powered 8” LF drivers and a 3.2” neodymium HF driver to generate an impressive 132dB Max SPL and 1600W peak power. Arrays of up to 12 WLA-28 modules can be suspended using the WLA-28 Fly Frame, or up to 8 WLA-28 combined with a WLA-15B for maximum impact.
Extend your Bass
To extend the low end of your array, is the Wharfedale Pro WLA-15B Sub. Reaching depths of 35Hz and with an output potential of 2800 Watts peak it’s a perfect match for the WLA-28. The low end response applies itself to the most demanding music genres with the same long- throw capabilities of it’s smaller counterpart.
Rock solid
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. Both the WLA-15B and WLA-28 are coated in the high quality Rhino Rock paint finish – a texture with a professional, discrete aesthetic whilst being prepared for the rigours of life on the road.


400 watts

2 x 8″ LF drivers

3.2″ HF compression driver

132 dB Max SPL

15mm Birch plywood construction

Integral, side plate adjustable rigging 

100° x 10° dispersion

400 watts AES (RMS) LF

800 watts Programme LF

1600 watts Peak LF


700 watts
  • Single 15″ LF driver with 4.0″ voice coil
  • 133 dB Max SPL
  • 15 mm / 18 mm Birch plywood construction
  • Integral rigging system
  • 700 watts AES (RMS)
  • 1400 watts Programme
  • 2800 watts Peak
  • 8 Ω impedance


1200 watts
  • Dual 15″ LF drivers with 4.0″ voice coils
  • 145 dB Max SPL
  • 15 mm / 18 mm Birch plywood construction
  • Integral rigging system
  • 1200 watts AES (RMS)
  • 2400 watts Programme
  • 4800 watts Peak
  • 4 Ω impedance

Dual 8"

At the heart of the WLA-28 is 2 x 8″ custom Wharfedale Pro LF drivers.

These feature 2.0″ voice coils to ensure high efficiency and high power handling.

The HF Compression driver is also custom made by Wharfedale Pro. Using a massive 3.2″ voice coil, this compression driver is coupled to a 100° x 10° waveguide.

These custom designed transducers are what give a WLA-28 system its incredible sound and power handling capacity.


Arrays can be assembled using only WLA-28 line array elements or with WLA-15B / WLA-28SUB Subwoofers at the top of the array.

The WLA-28 Common Fly frame supports up to 12 x WLA-28 elements and a WLA-28SUB.


Fly elements easily, in any combination, using WLA-28 Common Fly Frame

Just imagine

Imagine your dream system!  You can configure a WLA series rig to suit your needs!

To help your design and system preparations, you can download some recommended system diagrams.  These range from small to large and use a selection of our different amplifier ranges. 

Optimised Ground Stacking

WLA-28 rigging doubles up as an optimised ground stacking system, using the WLA-15B or WLA-28SUB subwoofer as a base.

Arrays of WLA-28 line array elements can be aimed downwards by as much as 10° to cover audience areas close to a stage, as well as upward by as much as 10° in order to better cover distant balcony seating areas. 

Bi-amp & passive modes

In BI-AMP mode, two power amplifiers can be used. This gives you the advantage of being able to select the best power amplifier specifications for each driver inside the loudspeaker. In a BI-AMP configuration, an external crossover is used to separate the frequencies and this splits the signal to the dedicated LF amplifier and the HF amplifier. This way, each amplifier is only working on the given frequency range and, in turn, is powering the corresponding driver inside the loudspeaker.

In PASSIVE mode, a single amplifier can be used to power all drivers inside the loudspeaker. The full frequency range is put into the loudspeaker and the loudspeakers’ internal crossover separates the frequencies, delivering the right frequencies to the right driver. In the example of a 2-way passive loudspeaker, this means that the single amplifier is powering both the HF compression driver and the LF transducer. The internal crossover takes care of both the frequency and power separation.

Optional TOUR BAGS

Protect your WLA array system with the WLA-28 and WLA-210X tourbags.

Removeable panels and front grille allow the WLA element to be used even while in its protective padded covering. Ideal for rental and touring applications, these tourbags will keep your system safe and protected during its hardworking lifespan!

For WLA-28 and use the WLA-210XSUB Tour bag for WLA-28SUB.



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, power and clarity that this system can deliver.




Model NameWLA-28WLA-15BWLA-28SUB
System TypePassivePassivePassive
ConfigurationTwo-way 2 x 8”15″ Subwoofer2 x 15″ subwoofer
Frequency Response (+/-3 dB)70 Hz – 20 KHz40 Hz – 1.5 KHz39 Hz-900 Hz
Frequency Range (-10 dB)65 Hz – 20 KHz35 Hz – 1.3 KHz39 Hz-1.5 KHz
Sensitivity (2.83 v / 1 meter)100 dB99 dB108 dB
Calculated Maximum SPL @ 1 meterLF:128 dB HF:132 dB133 dB145 dB
System Rated Impedance16 Ω8 Ω4 Ω
Low Frequency Transducer
Size2 x 203.2 mm / 2 x 8″381 mm / 15″2 x 381 mm / 15”
Voice Coil Size 50.8 mm / 2″101.6 mm / 4″100 mm / 4”
Rated Impedance8 Ω8 Ω2 x 8 Ω
LF Power (re:AES2-2012)2 x 200 W700 W2 x 600 W
High Frequency Transducer
HF Driver TypeCompression Driver
Voice Coil Size81.3 mm / 3.2″
Exit Size35.56 mm / 1.4″
Diaphragm MaterialTitanium
Rated Impedance8 Ω
HF Power (re:AES2-2012)80 W
Nominal Coverage (H x V)100° x 10°
System Continuous PowerLF:400 W HF:75 W700 W1200 W
System Programme PowerLF:800 W HF:150 W1400 W2400 W
System Peak PowerLF:1600 W HF:300 W2800 W4800 W
Crossover frequency1.8 KHzNoNo
Input Connector2 x speakON compatible2 x speakON compatible2 x speakON compatible
HardwareIntegral side plate adjustable
rigging 0°-10°
Integral side plate
non adjustable 
Integral side plate
non adjustable 
Enclosure Material15 mm Plywood15 mm Plywood15 mm,18 mm Plywood
FinishBlack PaintBlack PaintBlack Paint
Grille Material & Finish1.2 mm Black Steel1.2 mm Black Steel1.2 mm Black Steel
Dimensions – (Unpacked)
Height Front250 mm / 9.84″485 mm / 19.09″485 mm / 19.1″
Height Rear188 mm / 7.4”485 mm / 19.09″485 mm / 19.1″
Width760 mm / 29.92”760 mm / 29.92”760 mm / 29.9”
Depth424 mm /16.69”440 mm / 17.32”716 mm / 28.2”
Dimensions – (Packed)
Height375 mm / 14.76″545 mm / 21.46″850 mm / 33.5″
Width Front545 mm / 21.46″580 mm / 22.83″575 mm / 22.6″
Width Rear545 mm / 21.46″580 mm / 22.83″575 mm / 22.6″
Depth855 mm / 33.66″860 mm / 33.86″806 mm / 31.7″
Net Weight (kg / lbs)27 kg / 59.52 lbs38.5 kg / 84.88 lbs61.2 kg / 134.6 lbs
Gross Weight (kg / lbs)33 kg / 72.75 lbs46.5 kg / 102.51 lbs66.0 kg / 145.2 lbs