Treynolds155 gives excellent advice. I just sent a text to an audio buddy of mine last night suggesting that he tighten the driver fasteners on his speakers. You wouldn't think they would be loose in the first place and you wouldn't think it would make that big of a difference in the sound and you would be wrong on both counts. It's a good place to start and at the very least you will get a much tighter and more focused sound if they are even slightly loose
Is there a remedy?
Three years ago, I purchased a pair of Martin Logan 60XT towers. Sometime after that, I had read a comment on YouTube that this speaker was not well-braced. I tend not to listen at loud volumes and never noticed a distortion problem, but a few weeks ago I had the music turned up pretty loud and noticed a buzz in one speaker that I had not heard before (I had read that one of the improvements ML made to the 60XTi was better internal bracing).
My question: Is there an economical way to eliminate/reduce the buzzing when I choose to play music at a loud volume?