Breaking in speaker cables??

OP, by 'speaker disconnected', i trust you don't mean shorting the circuit, i.e.
joining the red and black at the speaker end?? There are amps that might
tolerate this but 99% will go bang..

No, didnt mean connecting positive and negative. Just didnt understand that it had to be hooked up. Still curious though about volume level. I'm guessing the louder it is, the more current, the faster it burns in?

I have never noticed volume making a difference for cable break in.

Stick one end of each cable in positive side of ac outlet make sure you tape other end so you don't get zapped. You will be putting 115 volts through cable. That is the fastest way to break them in.

Louder means higher voltage. You might try it. It works for me when I (re) solder terminations, but the break-in only takes a 1/2 hour of medium volume playing.

One European cable manufacturer "breaks in" his UNterminated wires by using them as a main cable for a few hours (on a lamp bulb if I'm not mistaken). That's 230V, 50Hz AC.

DON'T DO THIS unless you're an electrician!

Just mentioned it to give an idea of what crazy things we people will do. A cable cooker is more benign & much more expensive:)