Default standard for speaker "sensitivity" measurement listings? Anechoic? In-room? Other?

Jim Salk told me his measurements were anechoic because in room measurements are meaningless. I do not know how he does those measurements. Not sure how he would access such a facility. If he calculated in "half space" as lonemountain indicated, I would expect he would have used that phrase. Puzzling.

When I look at the measurements on the Salk site, none of them show anything below 200 hz. He may well be using a measurement method something like lonemountain describes. That is to take nothing away from his speakers, because I have found them to sound very good every time I have heard them.

Jim Salk told me his measurements were anechoic because in room measurements are meaningless.

Except that is where we all end up listening to their products.

That's why in room measurements are meaningless to a manufacturer unless every room was like the one they were measured in. 

Except that is where we all end up listening to their products.

I totally get Jim Salk's point; it's valid to insist on a metric which can be compared to other identical metrics. The question I would raise is the "half space" measurement equivalent, technically, to the anechoic one? Otherwise, instead of the apples-to-oranges problem (of anechoic to in-room) we have an apple-to-pears problems (of anechoic to half space).