The speaker cones are kind of on the small side, you'll be missing out on some of the upper bass frequencies. And the sub, I think it's only a 6.5inch, good enough for mid bass frequencies, but definitely not up to the job when it comes to real bass frequencies. A small satellite/sub combo like this usually end up with a sizable frequency gap in the upper bass frequencies, because the satellites cannot play low enough, and the subwoofer cannot play high enough.
But for movies, and non critical listening, this should be okay, you don't usually notice the gap.