Some smart people here, so I want to bounce this off y'all... The general consensus seems to be 2 - 3 ft above ear level. And then for 7,1, I've seen either 90 deg from the front (directly to the sides) as well as slightly forward or slightly rear of the listening position. A lot of people like dipoles, but then there are direct radiators and bipoles, omnis too. But then some people suggest about 12" above ear level. So I tried that: direct radiators, about 12" above ear level, and I've tried them directly to the side, and slightly behind the listening position. Directly to the side is no good. Waaaay too localizable. Great for multichannel music, but not so good with some elements of some soundtracks. Slightly to the rear (maybe 110 deg) doesn't really improve things much. So I have some of the Mirage Omni 50's there now, and a much better effect. But the gist of my question is this: if I did choose to use direct radiators 2 - 3 ft above ear level, then I'm mainly getting off-axis sound, which is poor quality in terms of flat freq response. (The largest problem is rolled off highs.) So now I put 2 and 2 and 2 together, and I think I come to the conclusion that: 1) this is why the original spec of DPL rolled off the highs at 7k Hz, and 2) why in a lot of Logic 7 modes specifically, the highs are rolled off. But not enough in my case. So I presume that rolling of the highs helps the prevent the ear and the brain in terms of localization. Dipoles rely on the same effect: off-axis sound. But the freq response sucks. (Ever see measurements of a dipole speaker? Bad.) So can't I have it all? Non-localizable sound with relatively good (i.e., flat) freq response? Just curious as to your thoughts... The Mirage Omnis seem to fit the bill (or maybe any bipolar speaker too), but I think I'd want to mate them with Vandersteens up front, so you see my dilemna. (Mix and match.) I am trying Mirages up front now, but to exaggerate the difference between the Vandersteens up front, which have incredible imaging, but a small sweet spot, with the Mirages, which have a much larger spaciousness and bigger sweet spot, is that the Mirages up front sound like I'm listening to the material down a tunnel. Kind of detached and un-involving (but I'm still working on placement too). Anyways!