I've had a pair of SDA CRS+'s since about 1985-86. They are some very well made, damn nice sounding bookshelf speakers. I have the stands that came with them as well and while they sound great on shelves, when on the stands they sound best. I also later matched them with an older M&K V2B sub which made them sound even better.
POLK SDA series
Just curious if anyone has owned or heard these older Polk models......