SVS Subwoofer

I bought this sub as a much-needed upgrade from my polk psw108 that i got a few years ago. I have been upgrading my sound system slowly and it was high time to get a good subwoofer. I did a lot of research and many people pointed to the SVS subs.I do a mix of movie watching and music listening with my sound system. The first thing I did after hooking the sub up and calibrating it was listen to some music. I tried a few bass-filled songs. They sounded great on this sub! They were nice and clear and filled the room well. Not muddy at all.After listening to music I decided to run a subwoofer test. This test ran a bunch of frequencies through the sub to test its response. When it started playing it felt like someone was grabbing my head and shaking it. This sub can hit low and hit it hard.I haven't had much chance to watch any loud action movies with it yet, but I have no doubt it should be able to handle it. I definitely like the sub so far, and will most likely order a second one in time.EDIT:I bought a second subwoofer, and it sounds fantastic! It's kinda funny because at one point I updated the firmware in my receiver and it messed up my settings without me realizing it until I tried to watch movie and the sub sounded awful. So in my attempt to determine the problem I turned my subs way up and all the windows in my house shook. These subs are fantastic and definitely worth it.