10″ Shallow-Mount Subwoofer – 1200 W Max Power (300 W Nominal),Glass Fiber and Mica Reinforced IMPP? cone, Double reinforced Spider, 8-AWG Push Terminals, Rubber Surround 1200 Watts Max. Power / 300 Watts Nominal Power 10″ Glass-fiber Mica reinforced IMPP? Cone Rubber Surround Aramid-fiber dual-spider design Frequency range: 20 Hz to 0.9 kHz Speaker Impedance: 4 ohms Speaker Efficiency: 85 dB (1W/1M) Mounting depth: 3.375�� (86mm) Recommended Box volume : 0.6cu.ft. (sealed)