Wharfedale Pro Sigma-X18B Subwoofer

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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

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

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.

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.

EASY CONNECTION

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.

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 3 .gll files.

SPECIFICATIONS

Model Name	SIGMA-X18B
System Type	Passive
Configuration	Subwoofer
Frequency Response (+/-3 dB)	35 Hz – 250 Hz
Frequency Range (-10 dB)	30 Hz – 250 Hz
Sensitivity 2.83 V / 1 m	100 dB
Calculated Maximum SPL @1 m	133 dB
System Rated Impedance	4 Ω
Low Frequency Transducer
Size (mm / inches)	457 mm / 18”
Voice Coil Size (mm / inches)	64 mm / 2.5”
Rated Impedance	4 Ω
LF Power re:AES2-2012	500 W
High Frequency Transducer
HF Driver Type	n/a
Coil Size (mm / inches)	n/a
Exit Size (mm / inches)	n/a
Diaphragm Material	n/a
Rated Impedance	n/a
HF Power re:AES2-2012	n/a
Waveguide Type
Nominal Coverage (H x V)	na
LF Driver	1 x 18″
HF Driver	n/a
Power
System Continuous Power	500 W
System Programme Power	1000 W
System Peak Power	2000 W
Crossover frequency	150 Hz
Input Connector	2 x speakON / 1x Barrier Strip
Hardware	35 mm pole socket

	4 handles on sides
Enclosure
Enclosure Material	18 mm MDF
Finish	Black Paint / White Paint
Grille Material & Finish	1.2 mm steel, painted
Dimensions – Unpacked
Height	554 mm / 21.25″
Width Front	502 mm / 20″
Width Rear	502 mm / 20″
Depth	780 mm / 30.8″
Dimensions – Packed
Height	649 mm / 25.5″
Width Front	588 mm / 22.75″
Width Rear	588 mm / 22.75″
Depth	865 mm / 34″
Weight
Net Weight	39.1 kg / 86 lbs
Gross Weight	46.4 kg / 102 lbs