I've had a Def Tech set up in a small listening/TV room for a couple years. I have three Studio Monitor 55s across the front and Def Tech in wall bipolars for the surrounds (off the top of my head, I believe they are BI 5.5 BPS). I'm very happy with the speakers, but they being used in a small room. We are building a new house that will have a much bigger room (roughly 23' by 20') that we will be turning into a dedicated theater. Will my existing Def Techs be sufficient for the space when paired with a couple quality subwoofers?