I have a cd from Granite Audio that has a full sweep of tones from 20 hz to 20khz. Not sure if it speeds up the burn-in process. I do find that after looping on the slow full range for about an hour my system does sound a little different. I also have the low end test cd too that I loop the slow 20 to 200 hz signal. That helps in blending in a sub if you have one and finding any vibrations in your home.
I found when I got my new Dynaudio C1's they took about 200 - 250 hrs to fully break in. I ran mine 24/7 for about 350 hrs but did not hear any changes after 250 hrs. They did sound great right out of the box but between 50 - 100 hrs all I could ask myself was why did I buy these for so much $$ (head slap). At 100 hrs they sounded very good again then at 200 hrs they were great again. Now at night I did turn the volume much lower and turned them up when I went to work. Now I wasn't happy with the cabinets of the first pair but at 200 hrs they sounded great. The second pair arrived 2 weeks later and that's when I used the Granite audio cd at night and when I wasn't home. The second pair of speakers took about 250 hrs. Dynaudio told me the break-in time was between 200 - 300 hrs. So I don't know what effect the burn-in cd had other than between 100 - 150 hrs they sounded horrible instead of 50 -100 hrs.
Some will say to set the speakers up normally to get to a reasonably loud level then put the speakers face to face as close as you can then reverse the wires on One speaker to put it out of phase. It will sound quieter because they are out of phase but do not put the volume any louder. I read about this after my speakers were broken in so I personally never did try that way.
I found when I got my new Dynaudio C1's they took about 200 - 250 hrs to fully break in. I ran mine 24/7 for about 350 hrs but did not hear any changes after 250 hrs. They did sound great right out of the box but between 50 - 100 hrs all I could ask myself was why did I buy these for so much $$ (head slap). At 100 hrs they sounded very good again then at 200 hrs they were great again. Now at night I did turn the volume much lower and turned them up when I went to work. Now I wasn't happy with the cabinets of the first pair but at 200 hrs they sounded great. The second pair arrived 2 weeks later and that's when I used the Granite audio cd at night and when I wasn't home. The second pair of speakers took about 250 hrs. Dynaudio told me the break-in time was between 200 - 300 hrs. So I don't know what effect the burn-in cd had other than between 100 - 150 hrs they sounded horrible instead of 50 -100 hrs.
Some will say to set the speakers up normally to get to a reasonably loud level then put the speakers face to face as close as you can then reverse the wires on One speaker to put it out of phase. It will sound quieter because they are out of phase but do not put the volume any louder. I read about this after my speakers were broken in so I personally never did try that way.