hey guys- I have a 7.2 receiver but am not using the rear "effects" hence it will be used a a 5.2. I will be getting either a 13Ultra or 2 12"Pluses. Now if I run the 2 pluses would I need to run a "y" off of one LFE or should I connect one to each sub output. *Will this be stereo? * Any advantages over a "y" splitter *Do I need to tune each individually *will they have the same output and playing the same freq? thanks audioholics!:D