I have received my SVS 20-39pci sub woofer and this thing rocks. I put in Jurassic Park DVD and had the walls shaking like the dinosaurs were coming home. Man oh man this is the best thing since slice bread!
There is nothing close that I have heard that can reach this low and sound so darn good. If your thinking of buying one, you won't be disappointed. Very musical too, I can't wait to go through all my cd's again to hear what I have been missing.