Wharfedale Double Subwoofer Speaker – Delta X218B

The Wharfedale Pro Delta X218B is a high-output dual 18-inch passive subwoofer designed to deliver powerful low-frequency reproduction for demanding live sound, touring, rental and fixed installation applications. It features two custom 470mm (18-inch) cast-frame low-frequency drivers, each equipped with a substantial 102mm (4-inch) voice coil. Its dual-chamber enclosure provides flexible operation through selectable Parallel and Discrete modes, allowing the two drivers to operate together or be addressed individually using separate amplification. With up to 1600W continuous system power in Parallel mode and a calculated maximum SPL of 138dB, the Delta X218B is built for professional sound reinforcement systems requiring substantial sub-bass output. Its 18mm plywood enclosure, black finish, steel grille and four side handles provide durability and convenient handling for professional applications.

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  Dual 18-Inch Low-Frequency Drivers

  Equipped with two custom 470mm (18-inch) cast-frame woofers designed to deliver powerful low-frequency output with reduced physical distortion.

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  Large 4-Inch Voice Coils

  Each driver features a 102mm (4-inch) voice coil designed to support high power handling and demanding professional subwoofer applications.

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  Dual-Chamber Enclosure

  The enclosure separates the two low-frequency drivers into individual chambers, supporting flexible system configuration.

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  Parallel and Discrete Operating Modes

  A rear-panel switch allows the two drivers to operate together in Parallel mode or individually in Discrete mode.

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  Flexible Amplifier Configuration

  Parallel mode presents a 4Ω system impedance, while Discrete mode provides two independent 8Ω driver connections for separate amplification.

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  High Power Handling

  The subwoofer supports 1600W continuous, 3200W programme and 6400W peak system power in Parallel mode.

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  High Maximum SPL

  Its calculated maximum sound pressure level is 138dB at 1 metre.

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  Professional Connectivity

  Two NL4 speakON-compatible input connectors support professional PA system connections.

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  Durable Plywood Construction

  The cabinet is constructed from 18mm plywood for strength and durability in demanding professional environments.

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  Protective Steel Grille

  A black 1.5mm steel grille protects the internal low-frequency drivers.

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  Rhino Rock Design Heritage

  The Delta X series is associated with Wharfedale Pro's durable Rhino Rock textured finish. The detailed specification table for this model specifically lists a black paint finish.

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  Four Side Handles

  Four side-mounted handles assist with transportation, lifting and positioning.

• Large Live Music EventsIts dual 18-inch drivers and high power handling make it suitable for demanding live music applications requiring substantial low-frequency output.
• Touring Sound SystemsThe robust plywood enclosure and protective steel grille are designed for the demands of professional touring.
• Rental PA SystemsIts high-output design and flexible operating modes make it suitable for professional sound equipment rental companies.
• Fixed Sound InstallationsThe subwoofer can be integrated into permanent professional sound systems in venues and entertainment facilities.
• Large DJ Sound SystemsThe dual 18-inch configuration provides powerful low-frequency reinforcement for DJ performances and electronic music.
• Bi-Amplified Subwoofer SystemsDiscrete mode allows each driver to be powered independently, providing flexibility when configuring multi-amplifier systems.
• High-Power Bass ReinforcementIts 138dB calculated maximum SPL and 6400W peak Parallel-mode rating make it suitable for high-output subwoofer applications.