Wharfedale Pro Sigma 15 White 15" PA Speaker 1400W

With its discreet and unobtrusive design SIGMA-15 features the latest proprietary Wharfedale Pro driver technology. In addition, SIGMA-15 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-15 and the new SIGMA SERIES is already a versatile and favourite choice for installers.

Features:

350W RMS / 700W Program / 1400W Peak
129dB Max SPL
50Hz - 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
 
DOUBLE ROLL SURROUND & DRIVER TECHNOLOGY

SIGMA-15 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.

ACOUSTICALLY MATCHED CABINET

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-15 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-15 is also coated in the latest generation chip-resistant, Rhino Rock paint.

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 Name SIGMA-15
System Type Passive
Configuration Two-way
Frequency Response (+/-3dB) 45Hz-18kHz
Frequency Range (-10 dB) 50Hz-20kHz
Sensitivity (2.83v/1m) 98dB
Calculated Maximum SPL @1m 129dB
System Rated Impedance8Ω
Low Frequency Transducer
 
Size 381mm / 15''
Voice-Coil Size 64mm / 2.5''
Rated Impedance 8Ω
LF Power (re:AES2-2012) 350W
High Frequency Transducer
 
HF Driver Type Compression Driver
Voice-Coil Size 44mm / 1.75''
Exit Size 1"
Diaphragm Material Titanium
Rated Impedance 8Ω
HF Power (re:AES2-2012) 40W
Nominal Coverage (H x V) 90° x 60°

Power
System Continuous Power 350W
System Programme Power 700W
System Peak Power 1400W
Crossover frequency 2kHz
Input Connector 2 x NL4 (speakON compatible)

Hardware
Dual-angle (0° or 10°) 35mm pole socket
M8 x 5
2 handles on sides

Enclosure
Enclosure Material
15mm MDF
Finish
Black or white
Grille Material & Finish
1.2mm steel, painted

Dimensions - Unpacked
 
Height 635mm / 25"
Width Front 435mm / 17"
Width Rear 261mm / 11.7"
Depth 439mm / 17.25"

Dimensions - Packed
 
Height 720mm / 28.35"
Width Front 553mm / 21.75"
Width Rear 303mm / 12"
Depth 488mm / 19.2"

Weight
 
Net Weight 23.4kg / 51.5lbs
Gross Weight 26.7kg / 58.7lbs