Today I've put the mic in front of the 802-16D. Horn is the same one used for the 288 measurements with the addition of the 21216 throat adapter (1" to 1.4").

This produced some very interesting results:

Here is the FRD with distortion (at 20cm):
6

Here is the THD:
7

And here is the smoothed version (stretched):
8

IMO the cleanness and smoothness I like is best correlated to the distortion. It remains verly low and constant in the horn loading region and I don't think it will get much lower at less power. Note that since they are 16 ohm dias, the power is half of the 288 measurements.

The FR is a tad more hilly than I would have expected, but it makes sense to my listening experiences.
I recognise the peak at 2.2KHz leading to a somewhat forward character on voices and midrange instruments. The 8K hump (heh a hump at 8K!) may give the sound a certain boost at the usually very low listening levels I practice. The unevenness in the midrange is comparable to the 288, while the latter has some serious HF issues (the sharp 8K notch and 12k peak).

The thing is I have not been bothered by this at all, but I see the room for improvement here!

I'm curious what a 802-G would bring to the table!

Coen