Alpine’s all-new R-Series subwoofers have gained significant engineering refinements that substantially improve sonic performance of their predecessors. The result is incredible power handling, clean output and deep bass excursion. Beyond their modest aesthetic upgrades, Alpine’s efforts were concentrated on re-engineering the motor and circuit design, crafting a performance sub that offers exceptional sound and resolution, well-exceeding their peers. Painstaking engineering, coupled with decades of expertise in high-end audio design, Alpine’s all-new R-Series continues its unrivalled reputation in benchmark performance and sound quality. Features Dual Gap Voice Coil Rigid Dust Cap Neodymium Magnet High-Amplitude Multi-Roll Surround Heavy-gauge push terminals Peak Power Handling: 2250W RMS Power Handling: 750W Nominal Impedance: 2ohms+2ohms Frequency Response: 24Hz-200kHz Mounting Dimensions: 171.5mm diameter x 149.2mm depth Specifications General Sealed: 10″ Frequency Response: 24Hz-200kHz RMS Power Handling: 750W Peak Power Handling: 2250W Voice Coil Diameter: 65.5 mm (2.6″)