Cam, What are you asking? If you mean the LFE signal from your receiver/pre-pro, then the simple answer is: RCA cable. You simply run a cable to the plate amp, set internal crossover to its highest setting, adjust the level, and enjoy. JP
Any subwoofer having both L and R RCA inputs can certainly use just one of those. Using a splitter at the end of your receiver's/processor's LFE cable and plugging into the other input will also work. It just serves to increase the subwoofer's sensitivity to adjusting the subwoofer level at the receiver/processor, as the R and L inputs are combined by the amplifier.