With both my Walsh2 S3's in a 12X12 room and my f5 S3's in an L shaped ~27X20 foot room, I've found the soundstage and imaging is best defined with the speakers at least 2-3 feet away from any wall (proportionally further in a larger room perhaps) and the speakers maybe 30-40% closer together than their distance to the primary listening position. With this configuration, instruments are very well defined and locatable within the soundstage, which fills in nicely from wall to wall mostly from behind the plane of the speakers.
Currently, my Walsh 2 S3s are less than ideally located only about 18 inches from the rear wall in a 12X12 room due to restrictions placed by my wife in her sunroom. This reduces the detail of the soundstage somewhat but otherwise they still sound great.
My original Walsh 2s from ~1982, which I just upgraded this year, paled by comparison in a/b tests in most every aspect of sonic rendering with the S3s.
Currently, my Walsh 2 S3s are less than ideally located only about 18 inches from the rear wall in a 12X12 room due to restrictions placed by my wife in her sunroom. This reduces the detail of the soundstage somewhat but otherwise they still sound great.
My original Walsh 2s from ~1982, which I just upgraded this year, paled by comparison in a/b tests in most every aspect of sonic rendering with the S3s.