If I wanted to add another subwoofer for the heck of it(I have two, one's just sitting around right now), what would be the best way to do it. My receiver is a Denon AVR-3803 and on the back there are white (L) and red (R) outputs for all the speakers - front, surround, etc. For the subwoofer the red output is labeled "subwoofer", while the white output is labeled "center". Would I royally screw something up if I ran the white "center" output to the additional subwoofer, or do I need some kind of splitter to split the signal from the red "subwoofer" output?