The best way to break in speakers.

There's a speaker and electronics break-in track on the XLO Test CD as
well as other Test CDs. The XLO track is put on repeat and allowed to play
fairly loudly for anywhere from a few days to a week or longer, depending
primarily on your tolerance for the racket on the burn in track. The speakers
can be placed directly facing each other to help things along. Blankets can
be placed over the speakers to reduce the noise.

Play them normally and enjoy. Test CDs might contain tracks that could damage speakers. Stereophile Test CD, for instance, contains track with high frequencies at 0dB that can fry tweeters if amp is set to normal listening levels.

Kijanki wrote,

"Play them normally and enjoy. Test CDs might contain tracks that could damage speakers. Stereophile Test CD, for instance, contains track with high frequencies at 0dB that can fry tweeters if amp is set to normal listening levels."

Maybe so. The break-in tracks on Test CDs, however, will not damage speakerst. It also helps to read the User Manual if you're, say, a newbie.

Break-in tracks won't damage speakers but other tracks might do. It is enough for the player to get out of repeat mode or for the owner to make mistake and engage "repeat disk" instead of "repeat track". I'm just saying be careful and check what is on test CD. You might copy just one track to CD-R.

I always follow the manufacturer's recommendations as outlined in the owners / users manual. You can't go wrong doing that.