Cool article. I’ve seen the flame arguments over driver break-in and have wondered what’s correct. I thought the surrounds and spiders would have some change in compliance, but I didn’t know if it was significant.
According to their measurements there is a change, but it’s very small and only takes a very short time to change. Furthermore, the air compliance inside the speaker box tends to dominate the speaker compliance characteristic more than the surrounds and spiders, and the electro/magnetic differences between identical drivers from a production line can cause a bigger difference than changes in the spider and surround compliance. End result; don’t expect to hear any difference after extended driver break-in.
