The Wharfedale Pro DELTA-X218B Passive Subwoofer is a dual-chamber dual 18-inch passive subwoofer designed to deliver the most powerful low-frequency performance. Crafted from 18 mm birch plywood and finished in our durable Tough-Tone paint, the cabinet is road-ready and built for the heaviest use. Inside, two custom Wharfedale Pro 18-inch LF drivers generate immense, chest-thumping bass that stays tight and controlled, even at extreme levels. Rated at 1,600 W continuous (up to 6,400 W peak) in Parallel mode and capable of 138 dB SPL, the Delta-X218B has the headroom to underpin the largest systems with authority. On the rear panel, a switch allows you to select Parallel mode, where both drivers share a single amplifier channel, or Discrete mode, where each driver can be powered separately for maximum system control. Heavy-duty side handles and a 35 mm pole socket complete a design that combines massive output with practical deployment for professional sound reinforcement. Specification Value Active or Passive Passive System Type Subwoofer System Continuous Power 1600 w Parallel / 800 w Discrete W System Programme Power 3200 w Parallel / 1600 w Discrete W System Peak Power 6400 w Parallel / 3200 w Discrete W Max SPL @ 1m 138 dB (Half Space) Freq Range (-10 dB) 25 Hz – 1.5 KHz Freq Response ( /-3 dB) 30 Hz – 1.5 KHz IP Certification None Driver Brand Wharfedale Pro LF Driver Size 2 x 18″ LF Voice Coil Size 4″ LF Rated Impedance 2 x 8 Ω LF Power (RE:AES2-2012) 2 x 800 W Preset Yes Input Connector 2 x 4 Pole Speaker Connector Enclosure Material Birch Plywood Grille Material and Finish Steel Black Finish Black Tough-Tone Handles 4 Deployment Ground Pole Mount None Sensitivity 2.83v / 1m 100 dB System Rated Impedance Parallel: 4 Ω Discrete: 8 Ω x 2 Recommended HPF = BW 18 dB/OCT. 25 Hz EQ Type None Included Accessory Quick Start Guide, AC cable Unpacked – Height (mm) 541 Unpacked – Width Front (mm) 1041 Unpacked – Width Rear (mm) 1041 Unpacked – Depth (mm) 650 Packed – Height (mm) 626 Packed – Width Front (mm) 1126 Packed – Width Rear (mm) 1126 Packed – Depth (mm) 722 Weight – Nett (Kg) 78.9 Weight – Gross (Kg) 86 DELTA-X218B – Wharfedale Pro
