bout what. i like to use dynamic music in all areas for to break in stuff. speakers are mechanical and they do break in just like you would break in a car. the motor, surround,spider all break in and loosen up and stuff. cables do not break in, they are not mechanical, some say it makes a diff some dont. but what happens with cables is the dielectric comes up to charge i believe. i do not think there is any moving of atoms or whatever.