The Wharfedale Impact X18B Passive Subwoofer is a powerful 18-inch passive subwoofer designed for professional live sound and installation applications. Built to deliver deep, controlled bass, it features a high-performance 18” low-frequency driver with a 2.5” voice coil, ensuring strong low-end response down to 30 Hz.
With 500W RMS power handling (1000W program and 2000W peak), the Impact X18B provides high output and reliability for demanding PA systems. Its rugged MDF cabinet with durable Tough-Tone finish makes it suitable for touring and fixed installations, while integrated handles and pole mount socket enhance usability. The subwoofer delivers a maximum SPL of up to 133 dB, making it ideal for clubs, events, and live performances.
Designed to pair seamlessly with full-range speakers, the Wharfedale Impact X18B ensures extended bass performance and a balanced sound system for professional audio setups.
Features
- 18” passive subwoofer for professional live sound
- 500W RMS / 1000W program / 2000W peak power handling
- Deep bass response down to 30 Hz
- Maximum SPL up to 133 dB for high-output performance
- Durable MDF cabinet with rugged Tough-Tone finish
- Dual Speakon / jack combo inputs for flexible connectivity
- 35 mm pole mount socket for system integration
- Ideal for PA systems, DJs, live events, and installations
Specifications
| Brand | Wharfedale Pro |
| Model | Impact X18B |
| System Type | Passive Subwoofer |
| Driver Size | 18″ / 470 mm |
| Voice Coil | 65 mm / 2.5″ |
| Power Handling (AES) | 500 W |
| Programme Power | 1000 W |
| Peak Power | 2000 W |
| Nominal Impedance | 4 Ω |
| Frequency Response (-3 dB) | 40 Hz – 220 Hz |
| Frequency Range (-10 dB) | 30 Hz – 250 Hz |
| Sensitivity (2.83 V/1 m) | 100 dB |
| Max SPL | 133 dB @ 1 m |
| Input Connectors | 2 x NL2 combi jacks |
| Pole Socket | 35 mm |
| Enclosure Material | MDF with textured black finish |
| Dimensions (H x W x D) | 526 mm × 611 mm × 606.5 mm |
| Weight | 34.5 kg approx. |
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