Wharfedale Pro Sigma-X15W Installation Speaker (White)
Wharfedale Pro Sigma-X15W Installation Speaker (White)
Wharfedale Pro Sigma-X15W Installation Speaker (White)
Wharfedale Pro Sigma-X15W Installation Speaker (White)
Wharfedale Pro

Wharfedale Pro Sigma-X15W Installation Speaker (White)

Regular price



Newly designed cosmetics

  • Rotatable HF waveguides
  • Re-evaluated performance
  • Updated column models with HF drivers
  • Column models with mini EVO-Fold waveguides
  • 70 V / 100 V Hi-Z Column models
  • EASE gll files available for download
  • Supported with system diagrams 
  • Supported with downloadable FIR presets
  • Easy fixings and brackets
  • Available in black or white durable paint finishes


  • 350 W AES (Continuous)
  • 700 W Programme
  • 1400 W Peak
  • 129 dB Max SPL @ 1 m


SIGMA-XV models feature the highly refined mini EVO-Fold waveguide along with HF compression drivers.  For the SIGMA-XV5 there is one, while the SIGMA-XV9 features two compression drivers, each with a mini EVO-Fold waveguide.

This mini EVO-Fold design provides consistent dispersion coverage on both the horizontal and vertical planes with the sound radiating from one, singular and coherent, source. 


Installations can be complicated enough, so we have made SIGMA-X series as easy as possible.

For the SIGMA-XV Column array, either use the included U bracket, or for even more adjustment, use the optional WPB-SV which gives up to 15° tilt and 180° of rotation. 

SIGMA-X full range cabinet models all have 17 x M8 rigging points, PLUS 35 mm pole sockets. Fly or wall bracket! SIGMA-X8, X10, X12 and X15 can use the optional WPB-1 or WPB-2 wall brackets.


All SIGMA-X models (with the exception of the 70 V / 100 V T models) are equipped with both speakON compatible and barrier strip inputs.  It is another small step that makes the installation easy.


SIGMA-X8, SIGMA-X10, SIGMA-X12 AND SIGMA-X15 feature a rotatable waveguide.

90° x 60° or 60° x 90°….you decide.


All full range models in the SIGMA-X series are supported with EASE 3 .gll files.


Model Name SIGMA-X15
System Type Passive
Configuration Two-Way
Frequency Response (+/-3 dB) 50 Hz – 18 KHz
Frequency Range (-10 dB) 45 Hz – 20 KHz
Sensitivity 2.83 V / 1 m 98 dB
Calculated Maximum SPL @1 m 129 dB
System Rated Impedance 8 Ω
Low Frequency Transducer
Size (mm / inches) 381 mm / 15”
Voice Coil Size (mm / inches) 64 mm / 2.5”
Rated Impedance 8 Ω
LF Power re:AES2-2012 350 W
High Frequency Transducer
HF Driver Type Compression Driver
Coil Size (mm / inches) 44 mm / 1.75”
Exit Size (mm / inches) 1″
Diaphragm Material Titanium
Rated Impedance 8 Ω
HF Power re:AES2-2012 40 W
Waveguide Type Constant Directivity / Rotatable
Nominal Coverage (H x V) 90˚ x 60˚
LF Driver 1 x 15″
HF Driver 1 x 1.75″ Titanium Compression Driver
System Continuous Power 350 W
System Programme Power 700 W
System Peak Power 1400 W
Crossover frequency 2.2 KHz
Input Connector 2 x speakON / 1x Barrier Strip
Hardware Dual-angle (0° / 10°) 35 mm socket
M8 x 17
2 handles on sides
Enclosure Material 15 mm MDF
Finish White Paint
Grille Material & Finish 1.2 mm steel, painted
Dimensions – Unpacked
Height 650 mm / 25.6″
Width Front 435 mm / 17″
Width Rear 261 mm / 11.7″
Depth 439 mm / 17.25″
Dimensions – Packed
Height 715 mm / 28.1″
Width Front 553 mm / 21.75″
Width Rear 304 mm / 12″
Depth 488 mm / 19.2″
Net Weight 24.4 kg / 53.7 lbs
Gross Weight 27.7 kg / 60.9 lbs
Optional Wall-mount bracket WPB-1 / WPB-2


Download user manual

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