Hi
Something is wrong with your M22s or upstream from your speakers. You should not be hearing any buzzing or hissing.

Could be a voice coil problem if it's the speakers. Might also be a problem with your source, amplifier or processor. You may want to try to localize the problem. Try swapping another pair of decent speakers for the M22s and see if that helps. If not, the problem is probably not with your M22s.

Could you describe the rest of your system?

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.