New diaphragm. Mar 3, 2017 6:34:08 GMT -5 via mobile Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by phonoboy on Mar 3, 2017 6:34:08 GMT -5 I uploaded a video of my New diaphragm as well as two others for comparison one mica and the other copper. Tell me what you think. youtu.be/8X8WC0n8BWY