Alright guys, finally finished my tune I've been working on for a month or so. It's got a bunch of sub and low-mid that I'd be happy to explain how I created.
Soundcloud
The first bass sound you hear starts at 0:07. It's a pretty standard wobble bass. A little higher in the register than I typically like to go for, but it worked well with this tune so I went for it. I made it in massive. Took a Carbon WT with pretty much nothing else on it, not even a filter. Then I used LFO Tool to act as a filter and, obviously, an LFO. At times I automated the WT-position (such as at 0:21), but for the most part I kept it all the way to the right. I then highpassed at 105 Hz to make room for my sub bass. I also used Ableton's Auto-Filter to sweep a highpass up and down during the intro and some other sections.
Next, I made this patch in Sylenth which was basically a single sine wave with a little bit of overdrive distortion and most importantly an envelope on pitch. The envelope was put in the negative direction, and attack was brought almost all the way up. I left D, S, and R at zero. This is first heard at 0:35 (you can only hear with a sub). I used it as a rhythmic element layered underneath my regular kick to stress certain key points in the song, like a new 8-bar phrase or something like that. The pitch envelope makes the pitch fall drastically. I resampled an A and a G and put them in my kick drum rack. It's a pretty common sound that I hear in a lot of deeper dubstep. If anyone knows other ways to make this sound please let us know because I think this method is somewhat limited in terms of how fast the pitch drops, etc.
Finally, the last bass sound in my song is the sub (again, will not be audible without a subwoofer). This starts at about 0:55-0:56 and plays underneath the mid bass for basically the entire length of the song. I made it in massive with just a sine wave. No need for a filter really because it has no harmonics. I played notes in the D1-F1 range (about 70-90 Hz), which is a little high for sub bass, but whatever, I kind of like a higher sub personally.
Well there you have it. Hope that gives someone out there some ideas or teaches someone something about bass. Let me know if you have any questions, I'd be glad to answer them!