Here is my honest opinion. There is no situation where 1 sub is better than 2 , so put that one in the closet or another smaller room and get 2 new subs . Technology march's on and i can tell you that you are missing out by not upgrading . If it just isnt in the budget then do the subcrawl to find the best location and reduce the sub output for movies that have lots of explosions.

DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry