Newer Roland synthesizers are perfect for formulating "modern" bass sounds. The super saw, FM modulation, Filter LFO, Lo-fi processor, and sideband filters on the V-synths, Jupiter-80?, Gaias allow for the hard insectile sound found in drum n bass, and dub.
Here are some settings to try:[gallery]
2 Super saws. 2nd is detuned- and one an octave lower. Pitch envelope optional ->
FM Modulation ON->
-12db Filter with slow LFO, sync, and fade in. triangle shape.
Lo-fi Processor Filter->
->Analog Chorus Master Effect.
You can substitute Sideband filter for the lo-fi processor and you start getting "transformers" type sounds, and it will also take some of the top end off.
Enjoy & Experiment.