Originally Posted by wes
My room is 20x18x10 I am not sure if need a second sub?
Your room is pretty large, I'd go with four subs for best balance! Well, as you can see I have a problem with shopping! You could easily do two in a room that size and it will sound better, as long as you set them both up well. I set each sub up separately as otherwise you have no idea which one your listening to.