Summary: I bought this Polk PSW125 subwoofer in 2011 and it sounded good for four years. Then it got the infamous heartbeat problem and made thumping and buzzing noises, even with no signal input, until I unplugged it.
Summary: I bought the sub as a replacement for a defective sub on my surround system in my living room...after hearing how perfect it sounded, I switched it to my system in my music room because it sounded better in there then the sub I was using..I am totally satisfied!
Summary: I put this sub in my living room that is 12x20 feet and I fills the room with a rich deep base. I really enjoy the rumbling that this sub causes. You actually get to experience the movie in stead of just watching the movie.
Pros: Easy set up to my sony receiver, Deep rich base.
Summary: Back in the day... I had 4 Soundstream 12's with a competition amp in the trunk of my car. The bass from this sub does not even come close to that old car, BUT it is not designed for that. This is high quality clean deep low sound that fills the room appropriately.
Pros: Great sound, attractive appearance, not a giant cabinet.
Great speaker (when it works); nonexistent customer support.
20 February 2015
Summary: It's a great sounding sub when it works, but if you run into product issues like I have (the amp has gone bad) good luck working with their customer support. It takes weeks to get a response from them and when you do it's something worthless like "call this number" to which there will be no reply.
Summary: Defect in these amps.. After 3 months of light use something blew in it and polk had to replace the amplifier. Now its just over 3 years old (by 3 months) and it happened again. Only a 3 year warranty exists on the amplifier. No coverage this time, and a new amp will cost $125+shipping.