SWR-8D2 - Alpine 8" Dual 2-Ohm Type-R Series Subwoofer * Kevlar reinforced pulp cone with HAMR Santoprene rubber surround * Power handling: 150-350 watts RMS (175 watts per coil) | Peak power: 1,000 watts * Sensitivity: 83.5 dB * Top-mount depth: 4-1/2"