Pioneer TS-SWX2502 10 inch Shallow-Mount Pre-Loaded Enclosure Music Power (Nominal): 1,200 W (400 W) Frequency Response: 20 Hz to 125 Hz, Sensitivity (1 W/1 m): 93 dB, Impedance: Single 4 Tight bass from a shallow compact design, Reinforced MICA injection-molded resin preloaded subwoofer cone