Key Features


  • 2 x 18″ LF drivers
  • 4″ voice coils
  • 138dB Max SPL
  • Birch plywood construction
  • Premium Rhino Rock paint
  • 4Ω Parallel and 8Ω operation
  • 1600w parallel continuous
  • 3200w parallel programme
  • 6400w parallel peak
  • 4 carry handles
New crossover design
Internally Delta X models have 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.
18mm Russian Birch Plywood Construction
Delta X218B is made of premium Russian birch plywood.It is even more dense than MDF and creates an extremely strong and durable cabinet. Although not recommended, birch plywood is more tolerant in damp conditions.During construction, it is harder to cut but holds screws better than particle board or MDF. This makes it ideal for flagship professional audio loudspeakers which are to be used in extreme and critical environments.
Solid as a rock
As with all Wharfedale Pro PA systems, years of expertise is behind a loudspeaker built to last, with thanks to our high standards of quality control.The Delta X series are coated in the highest quality Rhino Rock paint finish – a chip resistant texture with a professional, discrete aesthetic whilst being prepared for the rigours of life on the road.
Dual chamber, dual 18″
The two 18” Wharfedale Pro LF transducers with massive 4” voice coils work together to deliver up to 138dB Max SPL.Using cast frame aluminium baskets, any mechanical distortion is dramatically reduced ensuring smooth, accurate and honest reproduction.
Huge voice coils
The huge 4″ voice coils ensures massive power handling.The Delta X218B can handle peaks of up to 6400w and programme material averaging 3200w.These custom Wharfedale Pro drivers are efficient and powerful – delivering the sub-bass punch needed for larger gigs and impressive installations.


Model Name DELTA-X218B
System Type Passive
Configuration Dual Chamber Subwoofer
Frequency Response (+/-3dB) 30-1.5KHZ
Frequency Range (- 10 dB) 30-1.5KHZ
Sensitivity (2.83v/1m) 100dB
Calculated Maximum SPL @1m 138dB
System Rated Impedance Parallel:4Ω Discrete:8Ω x2
Low Frequency Transducer
Size 470mm / 18″
Voice-Coil Size 102mm / 4″
Rated Impedance 2×8Ω
LF Power (re:AES2-2012) 800W
System Continuous Power 1600W Parallel / 800W Discrete
System Programme Power 3200W Parallel / 1600W Discrete
System Peak Power 6400W Parallel / 3200W Discrete
Input Connector 2 x NL4 (speakON Compatible)
Handles 4 on Sides
Enclosure Material 18mm Plywood
Finish black paint
Grille Material & Finish 1.5 mm Steel Black
Dimensions – Unpacked
Height 541mm / 21.3″
Width Front 1041mm / 41.0″
Width Rear 1041mm / 41.0″
Depth 650mm / 25.6″
Dimensions – Packed
Height 626mm / 25.6″
Width Front 1126mm / 44.3″
Width Rear 1126mm / 44.3″
Depth 722mm / 28.4″
Dimensions – Packed Weight
Net Weight (kg / lbs) 78.9kg / 173.9lbs
Gross Weight (kg / lbs) 86.0kg / 189.6lbs


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