Sigma series

For fixed installation power

  • Discreet and unobtrusive design
  • Newly developed angled corner port system to reduce dimensions
  • Multiple M8 rigging points and a two way pole mount for easy installation
  • Crossovers tailored for vocal intelligibility
  • Chip resistant Rhino Rock paint
  • Double roll surround LF driver 
  • High performance HF driver with aluminium rear cover for maximum heat dissipation
  • 2.5” voice coils on 12”, 15” and 18B models
  • 7 SIGMA series models available in black or white in the range for maximum flexibility. 

Black or white

Sigma series are covered in our durable Rhino Rock paint finish.  Make your choice – Black or white!  Both look great and last a lifetime.

Sigma 8

150 watts
AES (Continuous)
  • 8.0″ LF driver
  • 1.5″ LF voice coil
  • 1.0″ HF compression driver
  • 122 dB Max SPL @ 1 meter
  • 300 watts Programme
  • 600 watts Peak

RECOMMENDED AMPLIFIERS

Sigma 10

200 watts
AES (Continuous)
  • 10″ LF driver
  • 1.5″ LF voice coil
  • 1.75″ HF compression driver
  • 124 dB Max SPL @ 1 m
  • 400 watts Programme
  • 800 watts Peak

RECOMMENDED AMPLIFIERS

Sigma 12

300 watts
AES (Continuous)
  • 12″ LF driver
  • 2.5″ LF voice coil
  • 1.75″ HF compression driver
  • 128 dB Max SPL @ 1 m
  • 600 watts Programme
  • 1200 watts Peak

RECOMMENDED AMPLIFIERS

sigma 15

350 watts
AES (Continuous)
  • 15″ LF driver
  • 2.5″ LF voice coil
  • 1.75″ HF compression driver
  • 129 dB Max SPL @ 1 m
  • 700 watts Programme
  • 1400 watts Peak

RECOMMENDED AMPLIFIERS

Sigma 18B

500 watts
AES (Continuous)
  • 15″ subwoofer
  • 2.5″ voice coil
  • 133 dB Max SPL @ 1 meter
  • 1000 watts Programme
  • 2000 watts Peak

RECOMMENDED AMPLIFIERS

Sigma v4

150 watts
AES (Continuous)
  • 4 x 3″ drivers
  • 1.3″ voice coils
  • 123 dB Max SPL @ 1 m
  • 300 watts Programme
  • 600 watts Peak

RECOMMENDED AMPLIFIERS

Sigma v8

300 watts
AES (Continuous)
  • 8 x 3″ drivers
  • 1.3″ voice coils
  • 128 dB Max SPL @ 1 m
  • 600 watts Programme
  • 1200 watts Peak

RECOMMENDED AMPLIFIERS

Sigma 'V' Columns

Using true line array technology the Sigma V4 and Sigma V8 column arrays are perfect for sound reinforcement installations where discreet aesthetics, high coverage angles and SPL are critical.   

Sigma V4 uses 4 * 3 inch full range transducers and the Sigma V8 uses 8 x 3″ drivers for warm lows and crystal clear highs.  Optimised transducer alignment delivers minimal anti-aliasing effects and maximum phase alignment. With Ultra-wide horizontal dispersion V4, and its larger brother V8, have been voiced to work perfectly with other models in the Wharfedale Pro Sigma range.

Brackets included

Sigma V4 and Sigma V8 are also supplied with steel mounting brackets to make installation quick, easy and tidy.

ACOUSTICALLY MATCHED CABINETS

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 a full-range Sigma loudspeaker also features a 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 series are also coated in the latest generation chip-resistant, Rhino Rock paint. 

Double roll surround

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. Sigma 12 and Sigma 15 use a 2.5” voice coil for improved thermal dissipation and consistent delivery at the highest of volumes throughout a performance. The 44mm titanium diaphragm HF compression 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.

FINE-TUNED CROSSOVER

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.

SPECIFICATIONS

Model NameSIGMA-8SIGMA-10SIGMA-12SIGMA-15SIGMA-18BSIGMA-V4SIGMA-V8
System TypePassivePassivePassivePassivePassivePassivePassive
ConfigurationTwo-wayTwo-wayTwo-wayTwo-waySubwooferFull RangeFull Range
Frequency Response (+/-3 dB)70 Hz – 18 kHz65 Hz – 18 kHz60 Hz – 18 kHz50 Hz – 18 kHz35 Hz – 250 Hz160 Hz – 17 kHz130 Hz – 17 kHz
Frequency Range (-10 dB)65 Hz – 20 kHz60 Hz – 20 kHz60 Hz – 20 kHz45 Hz – 20 kHz30 Hz – 250 Hz150 Hz – 20 kHz120 Hz – 20 kHz
Sensitivity 2.83 v / 1 m96 dB97 dB98 dB98 dB100 dB95 dB97 dB
Calculated Maximum SPL @1 m124 dB126 dB129 dB129 dB133 dB123 dB128 dB
System Rated Impedance8 Ω8 Ω8 Ω8 Ω4 Ω8 Ω8 Ω
Low Frequency Transducer
Size (mm / inches)203 mm / 8”254 mm / 10”305 mm / 12”381 mm / 15”457 mm / 18”4 x 75 mm / 3″8 x 75 mm / 3″
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”33 mm / 1.3″33 mm / 1.3″
Rated Impedance8 Ω8 Ω8 Ω8 Ω4 Ω8 Ω4 Ω
LF Power re:AES2-2012150 w200 w300 w350 w500 w40 w40 w
High Frequency Transducer
HF Driver TypeCompression DriverCompression DriverCompression DriverCompression Drivernanana
Coil Size (mm / inches)25 mm / 1”44 mm / 1.75”44 mm / 1.75”44 mm / 1.75”nanana
Exit Size (mm / inches)1″1″1″1″nanana
Diaphragm MaterialPolymerTitaniumTitaniumTitaniumnanana
Rated Impedance8 Ω8 Ω8 Ω8 Ωnanana
HF Power re:AES2-201225 w40 w40 w40 wnanana
Nominal Coverage (H x V)90˚ x 60˚90˚ x 60˚90˚ x 60˚90˚ x 60˚na160˚ x 40˚160˚ x 30˚
Power
System Continuous Power150 w200 w300 w350 w500 w150 w300 w
System Programme Power300 w400 w600 w700 w1000 w300 w600 w
System Peak Power600 w800 w1200 w1400 w2000 w600 w1200 w
Crossover frequency2.8 kHz2.4 kHz2.2 kHz2.2 kHz150 Hznana
Input Connector2 x NL4 (speakON compatible)2 x NL4 (speakON compatible)2 x NL4 (speakON compatible)2 x NL4 (speakON compatible)2 x NL4 (speakON compatible)1 x NL4 (speakON compatible)1 x NL4 (speakON compatible)
Hi Pass output connector1 x NL4 (speakON compatible)
Hardware35 mm pole socketDual-angle (0° /10°) 35 mm socketDual-angle (0° / 10°) 35 mm socketDual-angle (0° / 10°) 35 mm socket35 mm pole socketBracketBracket
M8 x 5M8 x 5M8 x 5M8 x 5
1 handle on back1 handle on back2 handles on sides2 handles on sides4 handles on sides
Enclosure
Enclosure Material12 mm MDF15 mm MDF15 mm MDF15 mm MDF18 mm MDF12 mm MDF12 mm MDF
FinishBlack Paint / White PaintBlack Paint / White PaintBlack Paint / White PaintBlack Paint / White PaintBlack Paint / White PaintBlack Paint / White PaintBlack Paint / White Paint
Grille Material & Finish1.2 mm steel, painted1.2 mm steel, painted1.2 mm steel, painted1.2 mm steel, painted1.2 mm steel, painted1.2 mm steel, painted1.2 mm steel, painted
Dimensions – Unpacked
Height430 mm / 17″500 mm / 19.5″537 mm / 21″635 mm / 25″554 mm / 21.25″445 mm / 17.5″805mm / 31.7″
Width Front272 mm / 11″383 mm / 13.3″354 mm / 14″435 mm / 17″502 mm / 20″116 mm / 4.6″116 mm / 4.6″
Width Rear158 mm / 6″213 mm / 8.4″218 mm / 8″261 mm / 11.7″502 mm / 20″85 mm / 3.3″85 mm / 3.3″
Depth277 mm / 13.5″339 mm / 13.3″359 mm / 14″439 mm / 17.25″780 mm / 30.8″115 mm / 4.5″115 mm / 4.5″
Dimensions – Packed
Height505 mm / 20″585 mm / 23″625 mm / 24.6″720 mm / 28.35″649 mm / 25.5″520 mm / 20.5″880 mm / 34.5″
Width Front363 mm / 14.25″451 mm / 18″468 mm / 18.4″553 mm / 21.75″588 mm / 22.75″220 mm / 8.7″220 mm / 8.7″
Width Rear196 mm / 7.71″254 mm / 10″260 mm / 10.2″303 mm / 12″588 mm / 22.75″220 mm / 8.7″220 mm / 8.7″
Depth322 mm / 12.75″384 mm / 13.3″404 mm / 15.9″488 mm / 19.2″865 mm / 34″220 mm / 8.7″220 mm / 8.7″
Weight
Net Weight7.8 kg / 17 lbs15.4 kg / 34 lbs18.2 kg / 40 lbs23.4 kg / 51.5 lbs39.1 kg / 86 lbs3 kg / 6.6 lbs5.6 kg / 12.32 lbs
Gross Weight8.8 kg / 19 lbs17.8 kg / 38.5 lbs20.9 kg / 45 lbs26.7 kg / 58.7 lbs46.4 kg / 102 lbs3.6 kg / 8 lbs6.6 kg / 14.2 lbs