Re: SR Black break in, my experience is that they sound glorious when first installed, super punchy and robust bass, excellent dynamics, etc. This is the time to check direction and listen for the more open, focused, and dimensionally-correct soundstage. A few hours later, well, the sound turns dreadful. Wanders all over the place over the next three days (just as Frank says), still brittle and two-dimensional the whole time, but then, on the fourth morning, BAM. Gets even better after that in a more subtle way. Found the same to be true of the SR receptacles, power cords, and Powercell.
fleschler, I use Hollographs in the rear corners (behind me), and agree that they add a bit of image focus and expansiveness to the soundstage when rotated properly. They actually hurt the sound when placed behind my Thiels, as did the HFTs, the latter intolerably bright, but good results in bringing the soundstage forward with no loss of depth when placed at tweeter height behind me. Suspect this is an anomaly specific to my speakers and room.
Best to all,
Dave