Yes. many LFE inputs are one of the two stereo ones... usually the left ch.
Keep in mind though, splitting up & out a single mono signal into two ch. isn't going to help much in the end.
Coming out of my HT receiver with only one LFE output, I went ahead and put a Y there and ran a pair of RCA cables to my sub... nothing to write home about there... so now i JUST USE ONE SIDE OF THE rca PAIR... WORKS FINE.
My 2CH preamp is another story.
Keep in mind though, splitting up & out a single mono signal into two ch. isn't going to help much in the end.
Coming out of my HT receiver with only one LFE output, I went ahead and put a Y there and ran a pair of RCA cables to my sub... nothing to write home about there... so now i JUST USE ONE SIDE OF THE rca PAIR... WORKS FINE.
My 2CH preamp is another story.