Delta-X218B 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.
| 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 |
All prices are exclusive of GST and freight, which are automatically calculated on order confirmation and/or checkout. Items in stock are generally dispatched within 1-2 working days of order being confirmed. Standard MDR terms and conditions (available below) apply to all orders.