If you need extreme output capabilities, gut wrenching low-end response, and minimal distortion, then this is the powered sub kit for you. Using Dayton Audio's massive RSS460HO-4 18" driver paired up with two of the RSS460-PR passive radiators and driven with 1,000 watts of power, this subwoofer kit is capable of seeming endless output capability with unbelievable low frequency extension. Beyond that, thanks to the low distortion design of the driver and added damping of the passive radiators, this kit produces remarkably low distortion levels. The addition of the SPA1000 subwoofer plate amplifier gives you the flexibility to easily integrate this potent bass making machine into your existing system.