Hello all!
I had a similar problem with one of my M22's. I spoke to Joe at Axiom, who immediately had a pretty good hunch as to what the problem was. He said that there is a gasket that can loosen during shipping, and all it takes is a tightening of the lugs around the woofer (and maybe even tweeter) with an Allen wrench to get rid of that buzzing.
I was experiencing it only with specific low frequencies, most memorably the deep bass notes from the intro to Steely Dan's "Babylon Sisters" on the Gaucho SACD. I tightened up the lugs, and sure enough... no more buzzing!
I'd bet dollars to donuts that your problem is the same. Let me know!
Happy New Year to everyone,
Lee
