Bio 8 600-Watt Dual 4-Ohm Car Subwoofer

8' Dual 4-Ohm Car Subwoofer. It features an RMS power of 300 watts and a maximum power of 600 watts. The subwoofer is equipped with a 2-inch, 4-layer copper voice coil and a single-stacked motor assembly. An advanced air cooling system is included for enhanced performance. The construction uses a low carbon iron zinc bottom plate. The mounting depth is 3.82 inches, and the required cutout diameter is 7.17 inches.