Extend Your Bass

The WLA-15B is the dedicated subwoofer engineered for the WLA-28 line array speaker. 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.



Key Features

  • 700W RMS / 1400W Programme / 2800W Peak
  • 35Hz – 900Hz Frequency Response
  • 133dB Max SPL
  • 15” high powered woofer
  • 8Ω Impedance
  • Designed specifically for WLA-28
  • 2 x Parallel Speakon Inputs
  • Rhino Rock textured black paint finish
  • Plywood construction
  • Steel grille
  • Ultra-secure locking pins
  • New WLA-28 fly frame available
  • Fly up to 8 x WLA-28 & 1 x WLA-15B


Also available is the WLA-28 Fly Frame, which ensures a highly secure mount for the top line array speaker or subwoofer. Between each speaker users can securely tether additional line-arrays via locking pins which are certified to hold multiple arrays safely and securely.

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.


System Type 15” Subwoofer
Frequency Response 35Hz – 900Hz
Power (RMS / Programme / Peak) 700W / 1400W / 2800W
Nominal Impedance
Sensitivity (1m/1w) 99dB
Max SPL 133dB
Inputs 2 x Speakon
Net Weight 38.5kg
Dimensions (W x H x D) 760mm x 485mm x 440mm