Dunlavy SC IV extra tweeter felt?

The heavy wool felt surrounding tweeters and mids on John Dunlavy's speakers were intended to reduce refections and improve imaging. That was never attached to the drivers themselves.

So if the OP's tweeters have any felt attached to the domes then as Zd542 suggested, it was likely done on replacement tweeters rather than original. Four felt pads, even if very small, seem likely to damp/reduce HF response by a significant amount.

I wonder if there might be some confusion here about whether the thick wool felt was utilized to closely surround specific drivers or actually attached to the cones/domes of drivers?

Felt being "present" for example is pretty vague.

My assumption in my response was the OP saying four felt pieces were attached to (over?) the domes of his tweeters. If that was not the case then disregard my comments.