eaker System: Bass Reflex Type 12” (30cm) High-Performance Subwoofer Peak Power: 1000W RMS Power: 300W Overall Dimensions Ø 324 x 660 mm Frequency Response 28-200Hz Speaker Impedance: 4 O Sensitivity: 92dB/W (1m) Stitched Alpine Logo Included Installation Brackets and Belts Heavy Duty Subwoofer Grill