Which generation of 2C do you own? 2c (c.1978), 2ci (c.1987), 2Ce (c.1995), 2Ce Signature (c.2000), 2Ce Signature II (current model). There have been vast improvements in the 30 years plus of production. And within model types there are constant revisions. If you have an earlier model, you owe it to yourself to audition a current model to see if the improvements will satisfy your needs. If greater bass extension and better dynamic range are what you are after, a 2WQ (a pair is even better)will certainly make a big difference.
