WHARFEDALE PRO Delta-X Series 1600 Watts RMS Dual 18" Passive Subwoofer

DELTA-X218B

Wharfedale Pro

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1600 watts
AES (RMS)
  • Dual 18″ Subwoofer
  • 4.0″ voice coils
  • 1600 watts AES (RMS)
  • 3200 watts Programme
  • 6400 watts Peak
  • 138 dB Max SPL @ 1 meter
  • Parallel (4Ω) and Discrete (2 x 8Ω) modes

Delta-X builds on the global success of the Wharfedale Pro Delta series.

Constructed from 15mm plywood and covered in the highest quality Rhino Rock paint, the new Delta-X models are instantly recognisable by their engraved iconic Wharfedale Pro ‘boomerang’ logo on their cabinets.  The fresh cosmetic design however is not the only improvement the engineering team have made.

Internally Delta-X also has a new crossover design and construction.  Using new component positioning and bracing, the sensitive crossover electronics have been re-engineered to improve long term performance and reliability – even at the highest of volumes.  

With rear panel switching, Delta-X can operate in either Bi-Amp or Full range modes.  This routing flexibility allows for Delta-X systems to be refined using multiple amplifiers and external crossovers.

Custom Wharfedale Pro transducers have also been selected. High output, low physical distortion cast frame woofers deliver unparalleled low frequency response. With the exception of the Delta-X10, 2” titanium compression drivers are coupled to 90° x 45° elliptical waveguides for impressive output level and smooth HF dispersion.

With a full lineup of 9 new models, ranging from the 300w RMS Delta-X10 to the 1600w RMS Dual Chamber 2 x 18” Delta-X218 subwoofer, Delta-X models are perfect for fixed installation and touring applications.


  • Birch plywood construction
  • Re-engineered robust crossover design
  • Suitable for touring, rental and installation
  • 1.4″ Exit, 2″ Titanium Diaphragm Compression Drivers
  • Proprietary 90° x 60° Elliptical Wave Guide Horn design
  • Bi-amp and Passive mode switching
  • Extremely durable Rhino Rock finished cabinets
  • Multiple M6, M8 & M10 rigging points and integral tripod stand adapter
  • Trapezoid shape for arrays and stage monitoring
  • Dual spider technology on 18″ woofers
  • Rubberised 4-way handle


Model Name Delta X218B
System Type Passive
Configuration Dual Chamber Subwoofer
Frequency Response (+/-3 dB) 30 Hz -1.5 KHz
Frequency Range (-10 dB) 25 Hz -1.5 KHz
Sensitivity (2.83 v / 1 m) 100 dB
Calculated Maximum SPL @1 m 138 dB
System Rated Impedance Parallel: 4 Ω Discrete: 8 Ω x 2
Low Frequency Transducer  
Size 470 mm / 18″
Voice Coil Size 102 mm / 4″
Rated Impedance 2 x 8 Ω
LF Power (re:AES2-2012) 2 x 800 w
High Frequency Transducer  
HF Driver Type  
Voice Coil Size  
Exit Size  
Diaphragm Material  
Rated Impedance  
HF Power (re:AES2-2012)  
Nominal Coverage (H x V)  
Power  
System Continuous Power 1600 w Parallel / 800 w Discrete
System Programme Power 3200 w Parallel / 1600 w Discrete
System Peak Power 6400 w Parallel / 3200 w Discrete
Crossover frequency  
Input Connector 2 x NL4 (speakON Compatible)
Hardware  
Pole Mount  
Handles 4 on Sides
Enclosure  
Enclosure Material 18 mm Plywood
Finish Rhino Rock
Grille Material & Finish 1.5 mm Steel Black
Dimensions – Unpacked  
Height 541 mm / 21.3”
Width Front 1041 mm / 41.0”
Width Rear 1041 mm / 41.0”
Depth 650 mm / 25.6”
Dimensions – Packed  
Height 626 mm / 25.6″
Width Front 1126 mm / 44.3″
Width Rear 1126 mm / 44.3″
Depth 722 mm / 28.4″
Weight  
Net Weight (kg / lbs) 78.9 kg / 173.9 lbs
Gross Weight (kg / lbs) 86.0 kg / 189.6 lbs