lfe or pass thru

Ok I have read the polk recommendations and recommendations elsewhere, but none of them have a really good justification for one or the other. help me out please...:)

my amp has pre-outs for basically everything, I was thinking of going with a Y adapter to a single rca line, probably the moster thx ultras, from the front left and rights out of the pre-outs hook the Y to left and left and right and right and then down to a run of one right and one left to the lfe on the sub. good idea or no?

or run left and right NON pre(speaker wire from amp) to the sub and out to the fronts from there. which will give me the best value from your experience? thanks.
Post edited by Danac787 on

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