DESC: The JL Audio 13W7 is a 13.5"" Dual Voice Coil 1.5 Ohm Subwoofer with a 1000 Watt RMS Power Handling Capability. Each motor and each suspension system is specifically designed and tuned for each driver. Meticulously engineered the JL Audio 13W7 reproduces sub-bass with extreme fidelity at any volume level, provided it is installed and tuned properly.