Is it bad to play iMacs at full volume?? So confused

This has happened so many times, I have a late 2006 20 iMac, early 2008 20 iMac, late 2009 27 iMac, and mid 2017 27 5k iMac, and I use them all for different things such as games or schoolwork and blast music on which ever one im on and every single one of them now has at least one of the speakers buzzing loudly while playing music on full or near full volume, they didn't start that way but overtime that happened, I've replaced the internal speakers several times in some of the older iMacs but it happens again after a period of time and the buzzing is really loud and noticeable and really annoying