Summary: I purchased this Polk subwoofer for more of it's cosmetic appearance rather than it's specifications / expected performance. I'm still rather happy with it's performance though. It actually rattles my house when I crank it up. Still, I wouldn't highly recommend this subwoofer to others.
Summary: To be fair, I use a SVS 10" ported sub in my main listening/HT room. The PSW111 is not a competitor for a sub of SVS quality, but it does a decent job given the following constraints I had to deal with: small size (~1/2 the SVS, placed under a lamp table per CINCHOUSE), low cost (~1/4 the SVS), and accepts speaker level inputs. I would not recommend as the basis of a serious HT, but it can serve a purpose similar to mine.
Summary: I have had this sub for 6-7 months now. Initially, I didn't like the sound, but then read about the break in period. I don't recall how long the break-in was, but it wasn't more than a week or so of evening TV watching. The sound now is great! I gave it 4 stars because I don't think it is a great "feel it in your chest", or "thump" kind of bass that I like for hip-hop/dance music.