How long should it take to break in Kharma Cables


I recently purchased the Kharma Grand reference speaker cables (2 meters). The system now sounds a good deal more bright and tinny sounding. I have already played music throught them for 30 hours.
henry_10023
As learned here lately on the burn-in posts, 200 hours or more especially if they are silver cables. Both my Pure Note and Siltech cables sounded thin until 200-300 hours. I know people don't like to wait but that is the "nature of the beast."