I find that, realistically, in the average home no more than one person wants to listen closely to something. For everyone else involved in other things the quieter the better, although "background levels" are usually acceptable.
With the set up I described on page 1 of this thread there was a relatively extreme difference between levels in the chair and the rest of the house, which was part of the plan. It was nice to be able to enjoy decent loudness without bothering anyone.
Most of the time the speakers would be swiveled out for casual listening. Of course with this arrangement they were too close together for "proper" stereo placed just each side of a chair, but I don't listen for imaging when I'm walking around the house!
It did help that they were small, light and floor standing. This wouldn't work for a spiked setup unless the stand top was big enough to allow the speaker to be turned around on it and the speaker itself was not on spikes.
All that is needed is a speaker whose sound comes together at those close distances. Do the 1801s? I haven't heard them.
cheers