Reply to sub bass help

hey guys, so I'm still pretty new to producing dubstep. I post this song because it has a specific sub bass line I want to kind of replicate. The track I'm working on is a lot more ambient, so I dont want to really use a lot of midrange growl, mostly I'm just interested in the "womp oscillation". not really wobble... just this pressure that kinda compresses your chest.

I love to double drop this tune because the bass does a really good job at pressurizing a room. The bass line I want to replicate is most prevalent around 1:50.

http://www.youtube.com/watch?v=ZJ04B...feature=search