Gmood is right. In a small room you aren't likely to better the Rocket sub. It is highly musical, favoring quality over quantity. It wouldn't be my first choice for movies or even music in a large room, but for your needs it should be perfect.
Oz
Oz
Subwoofer reccomendations
I am looking for a subwoofer to go with my Sonus Faber Concerto Stand mount speakers. It must be quick and musical because I don't want to lose that Sonus Faber midrange to a black boomy box in the corner. My two choices for now are a REL storm III, or a martin Logan Depth. I may even go down to a REL strata III. My room is on the small side, about 14 by 12. You can see the rest of my system on Audiogon. I'd rather not spend more than $1200 on a sub new or used. I have heard the Storm III before, but it was in a VERY large room, and it didn't have enough for the room size. I have never heard the Depth before. Please help.