In the ES1, there is a patch in the legacy settings (if you installed them), which is called drum n bass drop. This is a good patch to play with...
Here's a pic of it's settings:
The important settings to use to create the "drop" aspect is the Mod Envelope.
Get a bass sound you like and set the Md wheel router to Pitch.
Adjust the Mod wheel value to around -2000ms or so (closer to decay)
Put the Int Via velocity to full.
Let me know if that helps.