thanks for response
How interesting.... some very quick nice feedback. I found this discussion after posting here and there for years over at the infiinity classics area. I think that's a terrific area, but the discussion seems to have waned.
I am listening to Pet Sounds, an interesting CD recent version, because it includes all the tracks in their original mono state, and then all of them in stereo.
The comment about a large room to let the speakers breathe seems to be true. Additionally note that since it's a concrete dome, the wall behind, and the ceiling above is concrete, resulting I suppose in some unusual audio aspects? The ceiling arches upward.... a visitor called them cathedral-type ceilings... the place isn't that big, but he had a point, in terms of shape, and a certain unexpected space (the whole place is underground, technically, so visitors are surprised when it has some sense of relaxed space and some (but not enough) light.
I would have to get very low marks in terms of audio optimization. I am clueless as to electrical technical specifications, and so I just try to enjoy the equipment and, as long as it's working and playing music in a way that fills the home with sounds I want to hear, I try to let it go at that. Long-term, I do think I would like to try a different crossover and-or preamp setup, to try to see, perhaps just out of curiousity, if I could fill in the middle part of the sound a bit better.