The sub came with resistors that were designed to be installed in series with the positive inputs (the output from the amplifier driving it). The resistors are designed to shut off power to the speaker if the input wattage exceeds 50 watts; presumably, JVC engineers did that because the "esoteric" honeycomb driver in the CS-F300C is very sensitive to overload.
In my current installation, the subwooofer is mounted upside down in the trunk, underneath the rear deck of a 1998 Pontiac Sunfire convertible. Driven by a small Crutchfield 3020 amp (2x30 watt RMS), this adds substantive bottom end to a system driven by a Pioneer 4x22 watt RMS system. If you have crossover
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