You have a choice. You can either buy another cable, or 2, or 3, or 10, and somewhere convince yourself along the way that the bass is better, maybe you will throw in a cable elevator, or something, and sure, for a day, a week, a month you will be convinced it is ... till it is not.
If you don't have deep / full bass, then cable is not the problem. Period. End of story. What we are talking here is a change that is orders of magnitude beyond what a cable will ever do. Take your pick: Amplifier/Speaker issue (possibly, but lowest probability), Your speakers/system just are not up to the task (quite likely), Your speakers and the room as a whole are not up to the task (also likely).
You are looking for an easy solution to a problem, as opposed to facing the problem and fixing it. You are not alone. It is a common affliction amongst audiophiles.