Newbie to some of this deep audio stuff......Any comments about my using this 1990's era subwoofer tied n with the Klipsch surround set up? Currently, I have pieces of the Klipsch reference series that I am using. The subwoofer works well, but it is not plugged n2 the receiver because the sub does not have an lfe. I tried a splitter on the sub from the receiver to both rca jacks w/o success. Currently, the wires from the receiver go to the sub and then the speakers.