Break in to my understanding happens in two ways.
1. In a brand new pair driven by amplified signal the new drivers and cones of the speakers become active, move, vibrate and over time settle down to produce sound in a consistent manner. You may like this, or not
2. Your ears and brain hear the sound coming out from the new speakers and over time become used to this. Again you may like this or it may not satisfy your expectations.
Some manufacturers drive the speakers during the assembly process for hours, even hundreds of hours. Not sure if all manufacturers do it with all their offerings.
You have three speaker components set up in your room which is acoustically different from the room where you auditioned; the sound is likely to be different for sure. (Placement, room size, shape and placement all matter)
Read up on speaker and subwoofer placement and integration and work to get this right.
Further unless you are using the same or comparable quality of electronics and recordings as used in your audition there will be differences.
This is not to say you can’t not achieve the same experience in your home or even better.
It does mean that you will need to understand the above factors and make changes and tweaks. So letting the set up play and paying attention to the music, sound quality over several hours as you are doing is a good start. Meanwhile you could also research more for better understanding and work on getting the best sound possible.
Good luck and enjoy the process and discovery.
