It's a 2007 sedan, I got the car needing a control arm bushing and a wheel bearing on the other side, which I fixed. Soon after it started knocking and I can't tell which wheel it is coming from but it makes noise when I turn going slow and also when I hit bumps. Any ideas?

http://youtu.be/tb2aDZ975dk

 

Can't watch the video at work, but I'm gonna guess Ball joint

 

Is there a way to test that? I had it up on a jack and shook the wheels around but didn't hear anything knocking.