Watch the C At The Palms online guitar lesson by Freekbass from 50 Freekbass Licks You MUST Know
In this lick I am again using the "double-thumb" technique on my right hand using my thumb like a pick. The diffference with this lick, is I am also doing a palm-mute with my right hand between each note. This creates an almost tight/muted feel. Similar to when you see bassists take a piece of foam and put it under their strings to dampen the note.
Using this technique you can have that similar sound, but also pull it away to open up the note with more sustain if you wish.