IMPACT-X218B is a dual 18″ passive subwoofer from our IMPACT-X Series — engineered to deliver exceptional low-frequency depth, output and reliability for large-scale live sound, touring and installation systems. Handling 1000 W AES (RMS), 2000 W programme and 4000 W peak power with a maximum SPL of 137 dB at 1 m, it features two custom Wharfedale Pro 18″ LF drivers with 2.5″ voice coils for tight, accurate bass reproduction. Extending from 30 Hz to 1.5 kHz, it provides powerful, defined low-end performance that complements the full-range Impact-X models perfectly. Constructed from premium MDF and finished in our rugged polyurea Tough-Tone paint, IMPACT-X218B is built to handle the demands of professional use.