Good video to show how to replace speaker! I have very similar rattle which started when the weather got colder. Not sure if only a coincidence but I need to check first if there are any loose screws/parts which could rattle around before replacing speaker. It is driving me crazy... Also, the numbers on the labels of the speakers, that you were talking about, is manufacturing date - year and week when the speaker was manufactured. One is from 2018, week 35 and the other one is from 2019., week 47.