I have an acoustic research s112ps that I haven’t used in years, think it was from high school. It still works so I was thinking of building a cheap sub setup for my ht/movies/ps3. In the product description it says 130w but if you look at the amp it says 230w at 120v. So I don't know if it’s junk or if I can build a cheap sub setup. I have the Polk monitor cs2 center and monitor 40 rears and I think I’m getting the monitor 70 for the fronts. I am also looking at getting a TV and receiver this week, black Friday! I was going to send some cash on the TV and receiver and skimp on the sub until I could afford to build something nice. If I’m using this amp and buying a cheap sub, could I get some ok sound for a few months? Pls let me know your opinions, recommended subs and box designs. I have plenty of space for a big box, thx for any input. I'm new at ht and am reading several hours a day to try and learn as much as possible.