
SIGMA-X Easy install
- 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
A complete re-design of the classic SIGMA series of Installation loudspeakers. 7 new models with a fresh new cosmetic for 2022.
Building on the reliable performance of the established SIGMA series, the new SIGMA-X features newly designed front grilles and support materials to make the installation simply look and sound great. Available in black or white durable paint finishes, SIGMA-X models now also include both speakON and barrier strip connections, making installation easy!Improved mounting and rigging options make SIGMA-X simple to install into almost any location. The improved audio definition is also welcomed as SIGMA-X has been completely re-evaluated by the Wharfedale Pro International R&D team.
New column models (Sigma-XV5 and XV9) also now feature HF compression drivers coupled to the innovative mini EVO-Fold waveguide developed for the flagship WLA-1 Hybrid Curvature Array system.
SIGMA-X8

- 150 W AES (Continuous)
- 300 W Programme
- 600 W Peak
- 124 dB Max SPL @ 1 m
SIGMA-X10

- 200 W AES (Continuous)
- 400 W Programme
- 800 W Peak
- 126 dB Max SPL @ 1 m
SIGMA-X12

- 300 W AES (Continuous)
- 600 W Programme
- 1200 W Peak
- 129 dB Max SPL @ 1 m
SIGMA-X15

- 350 W AES (Continuous)
- 700 W Programme
- 1400 W Peak
- 129 dB Max SPL @ 1 m
SIGMA-XV5

- 5 x 3″ full range drivers
- 1 x HF compression driver
- 180 W AES (Continuous)
- 360 W Programme
- 720 W Peak
- 123 dB Max SPL @ 1 m
- 70 V / 100 V Hi-Z model available
SIGMA-XV9

- 9 x 3″ full range drivers
- 2 x HF compression driver
- 360 W AES (Continuous)
- 720 W Programme
- 1440 W Peak
- 128 dB Max SPL @ 1 m
- 70 V / 100 V Hi-Z model available
SIGMA-X18B

- 500 W AES (Continuous) Parallel
- 1000 W Programme – Parallel
- 2000 W Peak – Parallel
- 2.5” LF Voice coils
- 133 dB Max SPL @ 1 m
GRILLE DESIGN
All SIGMA-X models feature the iconic Wharfedale Pro logo. A grille to enhance any stylish installation, without being visually overpowering.
Columns with
mini evo-fold
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.
EASY INSTALL
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.

Rotatable waveguides
SIGMA-X8, SIGMA-X10, SIGMA-X12 AND SIGMA-X15 feature a rotatable waveguide.
90° x 60° or 60° x 90°….you decide.

Support with ease
All full range models in the SIGMA-X series are supported with EASE .gll files.
Presets for SC-48 FIR
Download the FIR presets to get the most from a SIGMA-X system with the SC-48 FIR
Presets for DP-F (N)
Download the FIR presets to get the most from a SIGMA-X system with DP-F and DP-N series amplifiers
System Solutions
Building a system ? How about this one for inspiration?
SIMGA-X is engineered for any scale of install. There is a SIGMA-X solution!
We have made several recommended system diagrams which use our Wharfedale Pro DP series amplifiers with downloadable presets for DP-N and DP-F models. Download the PDF and take a look!

Full Range
SIGMA-X8 / 10 / 12 / 15

















































SUBWOOFER
SIGMA-X18B

































COLUMN ARRAYS
SIGMA-XV5 / XV9













































SPECIFICATIONS
Model Name | SIGMA-X8 | SIGMA-X10 | SIGMA-X12 | SIGMA-X15 | SIGMA-X18B |
---|---|---|---|---|---|
System Type | Passive | Passive | Passive | Passive | Passive |
Configuration | Two-Way | Two-Way | Two-Way | Two-Way | Subwoofer |
Frequency Response (+/-3 dB) | 70 Hz – 18 KHz | 65 Hz – 18 KHz | 60 Hz – 18 KHz | 50 Hz – 18 KHz | 35 Hz – 250 Hz |
Frequency Range (-10 dB) | 65 Hz – 20 KHz | 60 Hz – 20 KHz | 55 Hz – 20 KHz | 45 Hz – 20 KHz | 30 Hz – 250 Hz |
Sensitivity 2.83 V / 1 m | 96 dB | 97 dB | 98 dB | 98 dB | 100 dB |
Calculated Maximum SPL @1 m | 124 dB | 126 dB | 129 dB | 129 dB | 133 dB |
System Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 8 Ω | 4 Ω |
Low Frequency Transducer | |||||
Size (mm / inches) | 203 mm / 8” | 254 mm / 10” | 305 mm / 12” | 381 mm / 15” | 457 mm / 18” |
Voice Coil Size (mm / inches) | 38 mm / 1.5” | 38 mm / 1.5” | 64 mm / 2.5” | 64 mm / 2.5” | 64 mm / 2.5” |
Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 8 Ω | 4 Ω |
LF Power re:AES2-2012 | 150 W | 200 W | 300 W | 350 W | 500 W |
High Frequency Transducer | |||||
HF Driver Type | Compression Driver | Compression Driver | Compression Driver | Compression Driver | n/a |
Coil Size (mm / inches) | 44 mm / 1.75” | 44 mm / 1.75” | 44 mm / 1.75” | 44 mm / 1.75” | n/a |
Exit Size (mm / inches) | 1″ | 1″ | 1″ | 1″ | n/a |
Diaphragm Material | Titanium | Titanium | Titanium | Titanium | n/a |
Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 8 Ω | n/a |
HF Power re:AES2-2012 | 40 W | 40 W | 40 W | 40 W | n/a |
Waveguide Type | Constant Directivity / Rotatable | Constant Directivity / Rotatable | Constant Directivity / Rotatable | Constant Directivity / Rotatable | |
Nominal Coverage (H x V) | 90˚ x 60˚ | 90˚ x 60˚ | 90˚ x 60˚ | 90˚ x 60˚ | na |
LF Driver | 1 x 8″ | 1 x 10″ | 1 x 12″ | 1 x 15″ | 1 x 18″ |
HF Driver | 1 x 1.75″ Titanium Compression Driver | 1 x 1.75″ Titanium Compression Driver | 1 x 1.75″ Titanium Compression Driver | 1 x 1.75″ Titanium Compression Driver | n/a |
Power | |||||
System Continuous Power | 150 W | 200 W | 300 W | 350 W | 500 W |
System Programme Power | 300 W | 400 W | 600 W | 700 W | 1000 W |
System Peak Power | 600 W | 800 W | 1200 W | 1400 W | 2000 W |
Crossover frequency | 2.8 KHz | 2.4 KHz | 2.2 KHz | 2.2 KHz | 150 Hz |
Recommended HPF = BW 18 dB/oct. | 55 Hz | 45 Hz | 38 Hz | 33 Hz | 28 Hz |
Input Connector | 2 x speakON / 1x Barrier Strip | 2 x speakON / 1x Barrier Strip | 2 x speakON / 1x Barrier Strip | 2 x speakON / 1x Barrier Strip | 2 x speakON / 1x Barrier Strip |
Hardware | 35 mm pole socket | Dual-angle (0° /10°) 35 mm socket | Dual-angle (0° / 10°) 35 mm socket | Dual-angle (0° / 10°) 35 mm socket | 35 mm pole socket |
M8 x 17 | M8 x 17 | M8 x 17 | M8 x 17 | ||
1 handle on back | 1 handle on back | 1 handle on back | 2 handles on sides | 4 handles on sides | |
Enclosure | |||||
Enclosure Material | 15 mm MDF | 15 mm MDF | 15 mm MDF | 15 mm MDF | 18 mm MDF |
Finish | Black Paint / White Paint | Black Paint / White Paint | Black Paint / White Paint | Black Paint / White Paint | Black Paint / White Paint |
Grille Material & Finish | 1.2 mm steel, painted | 1.2 mm steel, painted | 1.2 mm steel, painted | 1.2 mm steel, painted | 1.2 mm steel, painted |
Dimensions – Unpacked | |||||
Height | 465 mm / 18.3″ | 520 mm / 20.5″ | 551 mm / 21.7″ | 650 mm / 25.6″ | 554 mm / 21.25″ |
Width Front | 284 mm / 11.2″ | 338 mm / 13.3″ | 354 mm / 14″ | 435 mm / 17″ | 502 mm / 20″ |
Width Rear | 176 mm / 6.9″ | 213 mm / 8.4″ | 218 mm / 8″ | 261 mm / 11.7″ | 502 mm / 20″ |
Depth | 282.7 mm / 11.1″ | 338.3 mm / 13.3″ | 359 mm / 14″ | 439 mm / 17.25″ | 780 mm / 30.8″ |
Dimensions – Packed | |||||
Height | 505 mm / 19.9″ | 585 mm / 23″ | 616 mm / 24.3″ | 715 mm / 28.1″ | 649 mm / 25.5″ |
Width Front | 364 mm / 14.3″ | 441 mm / 17.3″ | 468 mm / 18.4″ | 553 mm / 21.75″ | 588 mm / 22.75″ |
Width Rear | 214.4 mm / 8.43″ | 251 mm / 9.9″ | 260 mm / 10.2″ | 304 mm / 12″ | 588 mm / 22.75″ |
Depth | 333 mm / 13.1″ | 389 mm / 15.3″ | 404 mm / 15.9″ | 488 mm / 19.2″ | 865 mm / 34″ |
Weight | |||||
Net Weight | 12.2 kg / 26.8 lbs | 17.1 kg / 37.62 lbs | 19.1 kg / 42.02 lbs | 24.4 kg / 53.7 lbs | 39.1 kg / 86 lbs |
Gross Weight | 13.5 kg / 29.7 lbs | 18.8 kg / 41.4 lbs | 20.74 kg / 48.2 lbs | 27.7 kg / 60.9 lbs | 46.4 kg / 102 lbs |
Optional Wall-mount bracket | WPB-1 / WPB-2 | WPB-1 / WPB-2 | WPB-1 / WPB-2 | WPB-1 / WPB-2 | n/a |
Model Name | SIGMA-XV5 | SIGMA-XV9 | SIGMA-XV5T | SIGMA-XV9T |
---|---|---|---|---|
System Type | Passive | Passive | Passive | Passive |
Configuration | Two-Way | Two-Way | Two-Way | Two-Way |
Frequency Response (+/-3 dB) | 160 Hz – 18 KHz | 130 Hz – 18 KHz | 160 Hz – 18 KHz | 130 Hz – 18 KHz |
Frequency Range (-10 dB) | 150 Hz – 20 KHz | 120 Hz – 20 KHz | 150 Hz – 20 KHz | 120 Hz – 20 KHz |
Sensitivity 2.83 V / 1 m | 95 dB | 97 dB | 95 dB | 97 dB |
Calculated Maximum SPL @1 m | 123 dB | 128 dB | 123 dB | 128 dB |
System Rated Impedance | 8 Ω | 4 Ω | 8 Ω | 4 Ω |
Low Frequency Transducer | ||||
Size (mm / inches) | 5 x 75 mm / 3″ | 9 x 75 mm / 3″ | 5 x 75 mm / 3″ | 9 x 75 mm / 3″ |
Voice Coil Size (mm / inches) | 33 mm / 1.3″ | 33 mm / 1.3″ | 33 mm / 1.3″ | 33 mm / 1.3″ |
Rated Impedance | 4 Ω | 4 Ω | 4 Ω | 4 Ω |
LF Power re:AES2-2012 | 40 W | 40 W | 40 W | 40 W |
High Frequency Transducer | ||||
HF Driver Type | 1 x 1″ High Frequency driver | 2 x 1″ High Frequency drivers | 1 x 1″ High Frequency driver | 2 x 1″ High Frequency drivers |
Coil Size (mm / inches) | 25.4 mm / 1″ | 25.4 mm / 1″ | 25.4 mm / 1″ | 25.4 mm / 1″ |
Exit Size (mm / inches) | 25.4 mm / 1″ | 25.4 mm / 1″ | 25.4 mm / 1″ | 25.4 mm / 1″ |
Diaphragm Material | PEI | PEI | PEI | PEI |
Rated Impedance | n/a | n/a | n/a | n/a |
HF Power re:AES2-2012 | n/a | n/a | n/a | n/a |
Waveguide Type | Mini EVO-Fold | Mini EVO-Fold | Mini EVO-Fold | Mini EVO-Fold |
Nominal Coverage (H x V) | 120˚ x 30˚ | 120˚ x 20˚ | 120˚ x 30˚ | 120˚ x 20˚ |
LF Driver | 5 x 3″ | 9 x 3″ | 5 x 3″ | 9 x 3″ |
HF Driver | 1 x 1″ PEI EVO-Fold Driver | 2 x 1″ PEI EVO-Fold Driver | 1 x 1″ PEI EVO-Fold Driver | 2 x 1″ PEI EVO-Fold Driver |
Power | ||||
System Continuous Power | 180 W | 360 W | 180 W | 360 W |
System Programme Power | 360 W | 720 W | 360 W | 720 W |
System Peak Power | 720 W | 1440 W | 720 W | 1440 W |
Transformer (T) | 100 V / 70 V | 100 V / 70 V | ||
Transformer Taps (70 V) | 7.5,15,30,60 W | 15,30,60,120 W | ||
Transformer Taps (100 V) | 15,30,60 W | 30,60,120 W | ||
Crossover frequency | 2.5 KHz | 2.5 KHz | 2.5 KHz | 2.5 KHz |
Recommended HPF = BW 18 dB/oct. | 160 Hz | 160 Hz | 160 Hz | 160 Hz |
Input Connector | 1 x speakON / 1x Barrier Strip | 1 x speakON / 1x Barrier Strip | Barrier Strip | Barrier Strip |
Hardware | U Bracket included | U Bracket included | U Bracket included | U Bracket included |
Enclosure | ||||
Enclosure Material | Aluminum | Aluminum | Aluminum | Aluminum |
Finish | Black Paint / White Paint | Black Paint / White Paint | Black Paint / White Paint | Black Paint / White Paint |
Grille Material & Finish | 1.2 mm steel, painted | 1.2 mm steel, painted | 1.2 mm steel, painted | 1.2 mm steel, painted |
Dimensions – Unpacked | ||||
Height | 720 mm / 28.3″ | 1210 mm / 47.6″ | 720 mm / 28.3″ | 1210 mm / 47.6″ |
Width Front | 126 mm / 4.96″ | 126 mm / 4.96″ | 126 mm / 4.96″ | 126 mm / 4.96″ |
Width Rear | 92 mm / 3.62″ | 92 mm / 3.62″ | 92 mm / 3.62″ | 92 mm / 3.62″ |
Depth | 145 mm / 5.71″ | 145 mm / 5.71″ | 145 mm / 5.71″ | 145 mm / 5.71″ |
Dimensions – Packed | ||||
Height | 865 mm / 30.1″ | 1285 mm / 50.6″ | 865 mm / 30.1″ | 1285 mm / 50.6″ |
Width Front | 210 mm / 8.27″ | 210 mm / 8.27″ | 210 mm / 8.27″ | 210 mm / 8.27″ |
Width Rear | 210 mm / 8.27″ | 210 mm / 8.27″ | 210 mm / 8.27″ | 210 mm / 8.27″ |
Depth | 210 mm / 8.27″ | 210 mm / 8.27″ | 210 mm / 8.27″ | 210 mm / 8.27″ |
Weight | ||||
Net Weight | 6.8 kg / 14.96 lbs | 10.1 kg / 22.2 lbs | 8.4 kg / 18.4 lbs | 13.9 kg / 30.58 lbs |
Gross Weight | 7.6 kg / 16.72 lbs | 11.6 kg / 25.5 lbs | 9.2 kg / 20.24 lbs | 15.4 kg / 33.88 lbs |
Optional Wall-mount bracket | WPB-SV | WPB-SV | WPB-SV | WPB-SV |