b_limo, my understanding is that the speaker drivers have an initial "break in" but is very short duration at the factory, and perhaps somewhat more over the initial period of use, more on the order of first few dozen hours, not continually as if reverting back to an initial state.
My guess is that any "loosening up" would be in the first second or two upon using them. How is a person supposed to determine from listening that any kind of loosening up has happened when human hearing is not as consistent as electronics? Forget about it, as it's a waste of your time. Put your time/money into getting better gear.
I move speakers in and out continually, and I pay no attention to such things. To do so would be a waste of time for me and lead to far less productive system building.
I don't know that your caps are charged even if you leave the amp on. No signal to the speakers.
Work on the major things that make improvements, not the cheap, low grade things. Do not settle for insipid, low productivity changes.
How about tube degradation? Why not worry that leaving your tube amp on is slowly degrading your sound via shortened tube life? Is the benefit of speaker "warm up" overcoming the degradation of tube wear? See what I mean? Forget the nonsense, and work to achieve vastly superior sound with a better system. Save your money, get better. Forget the junk methods. An audiophile can waste their life in pursuit of questionable activities instead of going after far better experiences. Don't be someone who wasted 20 years on the inconsequential stuff as opposed to getting a grand system.
