Thanks for the correct terminology Bob. I’ll use “horizontal polar pattern with respect to frequency” to be more precise. I’ve heard many speaker designers refer to the “dispersion characteristics” in conversations with laypersons. I guess that’s easier to grasp…LOL. Yes, my 8361A are vertical. Tweeters are ear level, when I’m seated, and they are 63.5 inches apart, center to center, and 56-57 inches to my ears, slightly toed in so they cross about a foot behind my head at about 63.5 inches from the tweeters. And I experience the same thing as you described with your Dynaudio: One person can stand behind me and still get a decent stereo image, but as soon as you go an inch or two off centre it’s not so good. :-))
