Note: If using the Behringer in stereo mode (not bridged), feed an input to each L and R input channel. The DIP pin mode that is supposed to multiply a single input to power both channels does not work properly, and one channel will have a very different gain level than the other. So if using a single subwoofer output from your receiver, use a Y adapter to feed both channel inputs on the EP2500, when in stereo mode.
-Chris