I agree... I see you have one of my plots posted above, I will caution that measurement I made of the 2397 was among the very first audio measurements I ever did using CLIO and may not be as useful or accurate as my later measurements... here is an example of a later on axis measurement comparing a TAD TD-4001 and JBL 2441 both on the Westlake horn and a TAD TD-4003 on a TAD TH-4003 horn. Even this measurement was fairly early in my measuring and I was just getting the hang of time windowing... I wouldn't trust the curves below about 1K to 1.5KHz... the windowing has likely clipped some information and overly smoothed the response.
I would offer to make additional measurements on both the Westlake with 2328 throats and the 2397 horns that I have in storage, but I do not have any 2" drivers to put on them.
Widget