I have a 27X25 basement with 7 foot ceilings that is carpeted and insulated throughout. I have a Kenwood VR-510 Receiver, Klipsch RS3II fronts,RC3II center, RS3II surrounds, and a Sony SAWM40 12" Sub (120 Watts). As you can see by my equipment, I am no audiophile. I purchased what I have because it seemed to the best quality for what I was willing to spend. My sub is the last piece of my original equipment. The sub seems adequate, but I can't "feel" it. After reading about the SVS subs on this forum I was thinking of purchasing a PB1-ISD. I guess I need to know if this would be a "night and day" difference? Would I feel that sub in my large basement? Any help here would be appreciated.