This JL Audio 15W0 subwoofer package includes two, 15" W0v3-4 subwoofers and the JL Audio RD1000/1 amplifier. With this setup, each 15W0v3-4 will receive 500 watts of RMS power from the amplifier, the maximum RMS power that JL recommends and the maximum RMS power you can run without voiding the warranty.
The JL Audio RD1000/1 is rated at 1000 watts RMS at 2 ohms. Since
there are two subwoofers in this package, it is best to wire them in parallel so that the amplifier will see a 2 ohm load and thus put out the full amount of rated RMS power. 1000 watts / 2 subwoofers = 500 watts RMS to each woofer.
Please see the wiring diagram below for the recommended, paralelle wiring for this package. The RD1000/1 is supplying the maximum amount of RMS power to these woofers. Any amplifier with over 1000 watts when using 2 subwoofers will void the warranty from JL Audio.