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Wharfedale Pro Sigma12-Wht White 12 Passive 2-way 350W RMS Installation Speakers

Wharfedale Pro Sigma12-Wht White 12 Passive 2-way 350W RMS Installation Speakers

Wharfedale Pro Sigma12-Wht White 12 Passive 2-way 350W RMS Installation Speakers

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Wharfedale Pro Sigma12-Wht White 12 Passive 2-way 350W RMS Installation Speakers
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Wharfedale Pro Sigma12-Wht White 12 Passive 2-way 350W RMS Installation Speakers

Cubed Shipping Weight 78.00lbs
Model Sigma 12 WHT
Web Item # 19172
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Canadian Warranty Service  FREE
Complies with Canadian Electrical Safety Standards  INFO
Retail Price $435.00
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Unless otherwise specified, all pricing is in Canadian Dollars (CAD.)

Product Details

Product Description

With this speaker you will never compromise overall sound quality

SIGMA-12 in White


With its discreet and unobtrusive design SIGMA-12 features the latest proprietary Wharfedale Pro driver technology. In addition, SIGMA-12 uses a newly developed angled corner port system so that the dimensions have been reduced without compromising the overall sound quality. Available in black or white and with comprehensive rigging options SIGMA-12 and the new SIGMA SERIES is already a versatile and favourite choice for installers.

Key Features

  • 300W RMS / 600W Program / 1200W Peak
  • 129dB Max SPL
  • 60Hz – 20kHz frequency response
  • Discreet and unobtrusive design
  • Newly developed angled corner port system to reduce dimensions
  • Multiple M8 rigging points and a 35mm speaker pole mount for easy installation
  • Crossovers tailored for vocal intelligibility
  • Chip resistant Rhino Rock paint
  • High performance HF driver with aluminium rear cover for maximum heat dissipation
  • Double roll surround LF driver for stability and power
  • 2.5” voice coil
  • 5 models available in black or white in the range for maximum flexibility


SIGMA 12 uses the latest in Wharfedale Pro driver technology: For the LF drivers, engineers have incorporated a curvilinear, double-roll surround for smooth mid-high transitions and stability for low through to mid range frequencies. Combined with a 2.5” voice coil for improved thermal dissipation, users can expect consistent delivery at the highest of volumes throughout a performance. The 44mm titanium diaphragm HF driver is equally robust in design – using a solid aluminum rear plate, the HF driver is strengthened for durability and heat is dissipated efficiently for demanding environments. Wharfedale Pro engineers have selected a 90° x 60° rectangular waveguide optimised for wide coverage for fixed installation purposes.


Wharfedale Pro engineers have matched the acoustic properties of the cabinet to the proprietary driver technology within, while taking physical aspects into consideration to ensure optimal positioning and size for installation. By using a newly-developed angled-corner port system, cabinet height and overall size has been reduced – ideal for unobtrusive mounting within your venue. Additionally the angle-corner port system is fine-tuned acoustically to ensure low- end punch – just as you would expect with a larger PA speaker. The cabinet of the SIGMA 12 loudspeaker also features a dual-angle pole mount socket ensuring the long-throw HF driver projects the sound directly to your audience. There are also 5 x M8 rigging points for safe and secure flying where needed. SIGMA 12 is also coated in the latest generation chip-resistant, Rhino Rock paint.


The crossovers ensure perfect integration between the drive units and acoustic properties of the cabinet. Electronic components are carefully selected, while over-complex networks have been avoided to maintain a pure and strong audio signal. Engineers have fine-tuned the crossover points for vocal intelligibility and tuned the high frequencies for long-throw to ensure clear coverage right to the back of your venue.


Model NameSIGMA-12
System TypePassive
Frequency Response (+/-3dB)55Hz-18kHz
Frequency Range (-10 dB)60Hz-20kHz
Sensitivity (2.83v/1m)98dB
Calculated Maximum SPL @1m129dB
System Rated Impedance
Low Frequency Transducer 
Size305mm / 12''
Voice-Coil Size64mm / 2.5''
Rated Impedance
LF Power (re:AES2-2012)300W
High Frequency Transducer 
HF Driver TypeCompression Driver
Voice-Coil Size44mm / 1.75''
Exit Size1"
Diaphragm MaterialTitanium
Rated Impedance
HF Power (re:AES2-2012)40W
Nominal Coverage (H x V)90° x 60°
System Continuous Power300W
System Programme Power600W
System Peak Power1200W
Crossover frequency2.2kHz
Input Connector2 x NL4 (speakON compatible)
HardwareDual-angle (0° or 10°) 35mm pole socket
M8 x 5
2 handles on sides
Enclosure Material15mm MDF
FinishBlack or white
Grille Material & Finish1.2mm steel, painted
Dimensions - Unpacked 
Height537mm / 21"
Width Front354mm / 14"
Width Rear218mm / 8"
Depth359mm / 14"
Dimensions - Packed 
Height625mm / 24.6"
Width Front468mm / 18.4"
Width Rear260mm / 10.2"
Depth404mm / 15.9"
Net Weight18.2kg / 40lbs
Gross Weight20.9kg / 45lbs
Chip resistant Rhino Rock Paint makes these speakers sturdy and durable

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