The Jantzen Audio C-Coil is wound around a toroidal sandwich core, and it has extremely low resistance and can shift a large amount of power without getting over heated.
The power handling data in watt RMS were measured at 8? impedance using a crossover setup. The maximum wattage data, relates to the maximum wattage load a given C-Coil can handle, before it impacts the inductance.
The C-Coil is only for application in the bass section of passive home-use speaker crossovers and for passive subwoofers.