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Full range models feature a 90° x 60° Elliptical Waveguide
In real-world terms this means that the higher frequencies can be heard with definition at 90° in the horizontal plane, and 60° in the vertical.
All full range models in the Impact-X series use this same elliptical waveguide design which makes for controllable coverage when using multiple Impact series loudspeakers.
The coil size and electrical sensitivity of a loudspeaker transducer is critical to its performance. Impact-X loudspeakers now include our proprietary IRIS X design which delivers Increased coil Radius and Increased electrical Sensitivity. The radius of the coil ensures smooth heat dissipation during prolonged high volume use, while the increased electrical sensitivity ensures that the transducer converts as much electrical power into sound output as the laws of physics allow.
A hot transducer wastes energy, risks damage and distorts. IRIS X reduces this through improved heat dissipation and improved efficiency.
In real-world terms, IRIS X transducers deliver higher SPL with less distortion. They lead the market with specifications and are designed and built entirely within Wharfedale Pro.
| Model Name | IMPACT-X218BD |
| System Type | Passive |
| Configuration | 2×18″ Subwoofer |
| Frequency Response (+/-3 dB) | 35 Hz-1.2 KHz |
| Frequency Range (-10 dB) | 30 Hz-1.5 KHz |
| Sensitivity (2.83 v / 1 m) | 102 dB |
| Calculated Maximum SPL @1 m | 139 dB |
| System Rated Impedance | 4 Ω |
| Low Frequency Transducer | |
| Size | 2 x 470 mm / 18″ |
| Voice Coil Size | Quad layer 3.0″ |
| Rated Impedance | 2 x 8 Ω |
| LF Power (re:AES2-2012) | 2 x 600 W |
| High Frequency Transducer | |
| HF Driver Type | |
| Voice Coil Size | |
| Exit Size | |
| Diaphragm Material | |
| Rated Impedance | |
| HF Power (re:AES2-2012) | |
| Nominal Coverage (H x V) | |
| Nominal Impedance | |
| Power | |
| System Continuous Power | 1200 W |
| System Programme Power | 2400 W |
| System Peak Power | 4800 W |
| Crossover frequency | |
| Input Connector | 2 x NL2 combi jack |
| Hardware | N/A |
| 2 carry handles | |
| Enclosure | |
| Enclosure Material and finish | 18 mm MDF |
| Colour Options | black paint |
| Grille Material & Finish | steel |
| Dimensions – Unpacked | |
| Height | 540 mm / 21.3″ |
| Width Front | 1040 mm / 40.9″ |
| Width Rear | 1040 mm / 40.9″ |
| Depth | 600 mm / 23.6″ |
| Dimensions – Packed | |
| Height | 600 mm / 23.6″ |
| Width Front | 1100 mm / 43.3″ |
| Width Rear | 1100 mm / 43.3″ |
| Depth | 640 mm / 25.2″ |
| Weight | |
| Net Weight | 69.0kg /151.0 lbs |
| Gross Weight | 74.3 kg / 163.5 lbs |
TOA is a global leader in professional PA, voice-alarm, and conference systems. Techniline is the authorised TOA distributor for the UAE & GCC — supplying, specifying, and supporting the full range with regional warranty and manufacturer-backed support.
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