That's a very helpful comparison zilch. It does seem to confirm my suspicions that the lighter diaphragm will provide more air , which I like , and probably also cool it down a little . Coz the fram that's in it now is HOT , and that peak at 10k may be what's wearing at my eardrums .

If it sounds "cleaner" I'll do it . That's what it looks like to me. The one that's in it now screams like a banshee.

Many thanks to mr widget as well it was his post on the "lord of the rings " that caused me to start thinking about the light "hifi" diaphragm in the 1st place ! That is one of the best posts on that topic that I have read on this ,or any other forum,.