An eighteen inch subwoofer which, when combined with the two-way models, provides a sub/sat system capable of generating 135 dB of full-range, high quality audio.Tough DuraFlexT finish enclosure. Heavy Duty 16 gauge protective screen backed steel grille. Frequency Range 35 Hz – 250 Hz. Frequency Response 52 Hz – 120 Hz. System Sensitivity 95 dB SPL (1w@1m) Power Rating, Pink Noise 800 W / 1600 W / 3200 W. (Continuous/Program/Peak) Rated Maximum SPL 130 dB SPL peak. Nominal Impedance 8 ohms. Dimensions (H x W x D) 678 mm x 536 mm x 615 mm. Net. Weight: 36 kg.