Ptmconsulting,
I also have a pair of Apogee DS which I have totally replaced all Xover components by latest audiophile grade components. This was an astonishing upgrade in sound quality, but still had the Apogee buzz on low frequency content when played relatively loud.
About a year ago, I had the ribbons replaced by Rich Murry of True Sound Works. No buzz, improved sound again with new ribbons. I told my wife I want to be burried with my DS when I decease :-). The are keepers for life!
I also have a pair of Apogee DS which I have totally replaced all Xover components by latest audiophile grade components. This was an astonishing upgrade in sound quality, but still had the Apogee buzz on low frequency content when played relatively loud.
About a year ago, I had the ribbons replaced by Rich Murry of True Sound Works. No buzz, improved sound again with new ribbons. I told my wife I want to be burried with my DS when I decease :-). The are keepers for life!