I can't imagine the designer not being able to help out with your question if you really need to know the model of the SEAS tweeter, presumably to facilitate a replacement. It's a shame really as Harbeth can always send you a private message or something. I'm afraid the designer may be the only person who is in the best position to advise on this subject. Or probably someone who has opened up the speaker and looked at the drivers.
For what it's worth, I did not post on HUG as frequently as I used to since they started this active moderation whereby each and every post will need to go through the moderator before they appear on the forum. Sometimes posts made by forummers are edited by the moderator before they show up on the page. Personally I'm little perturbed by this overly-protective policy they are practicing.
Sorry I can't be of any help.
For what it's worth, I did not post on HUG as frequently as I used to since they started this active moderation whereby each and every post will need to go through the moderator before they appear on the forum. Sometimes posts made by forummers are edited by the moderator before they show up on the page. Personally I'm little perturbed by this overly-protective policy they are practicing.
Sorry I can't be of any help.