The Wharfedale Pro DELTA-X18B Passive Subwoofer is a high-powered 18-inch passive subwoofer built to deliver deep, authoritative low-end for live sound and fixed installations. Its enclosure is crafted from 18 mm birch plywood and finished in our durable Tough-Tone paint, ensuring strength and resilience for touring and repeated use. Designed to extend the performance of the Delta-X full-range cabinets, the rear panel offers connectivity that allows easy integration into either passive or bi-amped system configurations. With 800 W continuous power handling (up to 3,200 W peak) and a maximum SPL of 134 dB, the Delta-X18B adds serious depth and impact to any setup. A Wharfedale Pro custom LF driver, mounted in the optimised cabinet, delivers tight, punchy bass that stays controlled even at high output levels. Equipped with a 35 mm pole socket and robust side handles, the Delta-X18B is practical to deploy while bringing heavyweight low-frequency performance to the Delta-X family. Specification Value Active or Passive Passive System Type Subwoofer Configuration Bass-reflex System Continuous Power 800 W System Programme Power 1600 W System Peak Power 3200 W Max SPL @ 1m 134 dB (Half Space) Freq Range (-10 dB) 30 Hz – 150 Hz Freq Response ( /-3 dB) 38 Hz -1.5 kHz (Bi-amp) IP Certification None Driver Brand Wharfedale Pro LF Driver Size 18″ LF Voice Coil Size 4″ LF Rated Impedance 8 Ω LF Power (RE:AES2-2012) 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 2 Deployment Ground Pole Mount 35 mm Sensitivity 2.83v / 1m 99 dB System Rated Impedance 8 Ω Recommended HPF = BW 18 dB/OCT. 30 Hz EQ Type None Included Accessory User Manual Unpacked – Height (mm) 539 Unpacked – Width Front (mm) 539 Unpacked – Width Rear (mm) 539 Unpacked – Depth (mm) 650 Packed – Height (mm) 624 Packed – Width Front (mm) 611 Packed – Width Rear (mm) 611 Packed – Depth (mm) 722 Weight – Nett (Kg) 37.3 Weight – Gross (Kg) 43.2 DELTA-X18B – Wharfedale Pro
