Type Enclosed Bass-Reflex Subwoofer Low-Frequency Transducer Two 12" cones Power Handling, RMS 600 W Power Handling, Peak 1800 W Frequency Response 30Hz-300Hz Nominal Impedance 2 x 4 ohms Sensitivity (2.83V@1m) 97 dB Enclosure Type 3/4" (19mm) MDF bass-reflex, with Slipstream port Connector Type Binding post Grille Proprietary Dimensions (H x W x D – Metric, English) 914mm x 414mm x 435mm (36" x 16-3/8" x 17-1/8")