I started with one pair of Bose 901, but that was only 18 speakers. So then when the new Bose 901 came out I added a pair of those. 36 speakers! Yet something still was missing. The sound was coming at me from all over but mostly in front and way too similar. Some recordings I could still tell were different from others. So I kept adding speakers. B&W, ML, MBL, JBL, REL, got a good deal on some Klipschorns that filled in the corners real nice, set of Quads left and right side walls, half a dozen Totem bookshelf, was almost there and good thing too starting to run out of wall space! Yet something was missing. Then it hit me- the ceiling! In-walls to the rescue!
That left only the floor. Which it turns out is mostly wasted space. Only a tiny amount of floor is actually doing anything. So now except for a foot path and enough to support the rack and chair its all speakers.
Imaging? None! Immersion? TOTAL!