Interesting question! We have been told that the name is pronounced ah-MENT by my grandfather who came from Europe. But it is commonly pronounced AY-ment in the states. Even I reffer to the name frequently as AY-ment, really rarely paying attention to its pronounciation. However when I pronounce it in its earlier form "AMEND" I pronounce it as ah-MEND, the same way they pronounce it in Germany.